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 ARCHIVED TOPIC: Diode question and I miss Radio Shack


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DC5 - Posted - 11/30/2021:  07:05:36


So I'm having some problems with my doorbell, and looking at some documentation there was supposed to be a diode on the bell button. A few years ago I would have gone to Radio Shack, they would have helped me out, and it would have cost me under a dollar (I see diodes online for under 10 cents.) Now my ignorance of electronics far exceeds my knowledge. I understand that a diode is basically a one way path for electricity, allowing flow in one direction and total resistance in the other. That's it. I know resisters have colored bands on them to show the amount of resistance, and that they too have a direction to mount them. I hate the thought of buying a 10 cent diode and then paying $9+ for shipping, or buying 100 diodes when I only need one.

So, can anyone tell me anything about what size diode I might need, and where one would look for them locally? What kind of store?

Thanks.

1935tb-11 - Posted - 11/30/2021:  07:15:18


a 1N4003 is pretty standard on door bells,,but its hard to just get one..most of the time its a pack of 10 or 50 but they are cheap.



here are 10 on ebay for 4 bucks and free shipping



ebay.com/itm/143825654079?chn=...nEALw_wcB


Edited by - 1935tb-11 on 11/30/2021 07:19:06

Wet Spaniel - Posted - 11/30/2021:  07:59:23


quote:

Originally posted by DC5

So I'm having some problems with my doorbell, and looking at some documentation there was supposed to be a diode on the bell button. A few years ago I would have gone to Radio Shack, they would have helped me out, and it would have cost me under a dollar (I see diodes online for under 10 cents.) Now my ignorance of electronics far exceeds my knowledge. I understand that a diode is basically a one way path for electricity, allowing flow in one direction and total resistance in the other. That's it. I know resisters have colored bands on them to show the amount of resistance, and that they too have a direction to mount them. I hate the thought of buying a 10 cent diode and then paying $9+ for shipping, or buying 100 diodes when I only need one.



So, can anyone tell me anything about what size diode I might need, and where one would look for them locally? What kind of store?



Thanks.






You did that on purpose didn't you - you little tinker!

1935tb-11 - Posted - 11/30/2021:  08:30:44


well i do miss radio shack

dat - Posted - 11/30/2021:  08:32:38


So, since the shipping on a 10 cent part is as much as it is, could you just get a new door bell and be close to the same price? Most products now are about as inexpensive to replace as they are to repair

rinemb - Posted - 11/30/2021:  08:41:19


Still a few in our neck of the woods. There is one in Colby, Kansas.
When I am out there on jobs, I often stop in, for circuit board etching solution, other odd stuff-like a diode, or cell phone stuff...they also became the Verizon store in the area.

And yes, I do miss the old "healthy" Radio Shacks. How many of you bought your first computer at Radio Shack, and many other first purchases?
Brad

DC5 - Posted - 11/30/2021:  09:18:10


quote:

Originally posted by dat

So, since the shipping on a 10 cent part is as much as it is, could you just get a new door bell and be close to the same price? Most products now are about as inexpensive to replace as they are to repair






I replaced the door bell button a couple of years ago, but did not notice the diode.  The doorbell itself was north of $60 so no, it is not cheaper to replace the whole thing.  The buttons themselves do not come with diodes. 

phb - Posted - 11/30/2021:  09:18:33


quote:

Originally posted by DC5

So I'm having some problems with my doorbell, and looking at some documentation there was supposed to be a diode on the bell button. A few years ago I would have gone to Radio Shack, they would have helped me out, and it would have cost me under a dollar (I see diodes online for under 10 cents.) Now my ignorance of electronics far exceeds my knowledge. I understand that a diode is basically a one way path for electricity, allowing flow in one direction and total resistance in the other. That's it. I know resisters have colored bands on them to show the amount of resistance, and that they too have a direction to mount them. I hate the thought of buying a 10 cent diode and then paying $9+ for shipping, or buying 100 diodes when I only need one.



So, can anyone tell me anything about what size diode I might need, and where one would look for them locally? What kind of store?






So, the important thing about the right diode is that it can carry the current the door bell electronics are going to put through it without getting damaged. The diodes Terry linked seem pretty strong (400 Volts breakthrough voltage, 0.7 Watts power dissipation) and will certainly work fine. Resistors have no direction to mount them, they are bidirectional.



If you hate buying 9 diodes you have no use for, you could buy another 9 door bells.



 

Bart Veerman - Posted - 11/30/2021:  10:48:40


Door bell button are cheap in Home Dep, some dollar stores even carry them.
Yup, I miss RS too!

banjo bill-e - Posted - 11/30/2021:  11:05:35


Long ago I managed a Radio Shack. Remember that wall of diodes and transistors? We had to inventory the entire store every two months, and counting those little blister packs took the whole damn night! The profit margin on those parts was very high but the dollar amount was so low that it was not really worth it, even in the late 70s. The age of the electronic hobbyist had already passed.

Brian T - Posted - 11/30/2021:  12:28:40


I still have my "protoboard" with several dedicated kinds of switches, IC sockets and even bipolar LED. Drive it with an old computer power supply for +/- 12VDC and +/-5VDC.

I was gifted a wireless doorbell system but I have never set it up.
My hearing is so poor that it might not make any difference.
The idea was that I would carry the RCVR in my pocket when expecting callers.
Guess I don't care any more.

DC5 - Posted - 11/30/2021:  13:16:44


quote:

Originally posted by Bart Veerman

Door bell button are cheap in Home Dep, some dollar stores even carry them.

Yup, I miss RS too!






Yes, but they don't have diodes. Just to ring a bell you don't need one, but I have an electronic bell that plays tunes that I can change from holiday to holiday. 

J e f f - Posted - 11/30/2021:  14:02:32


I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.

bubbalouie - Posted - 11/30/2021:  15:29:48


Im my hometown Radio Shack had a Tandy Leather store on one side. I made a bunch of stuff from kits there.



Moccasins, belts, wallets & stuff like that.  I used to buy crystal radio kits at R.S. too. 

Brian T - Posted - 11/30/2021:  15:42:49


My first "crystal radio" was a Knight Kit. Even had a galena crystal in a gob of solder and a "cat's whisker" to find a sweet spot. I can still remember Dad helping me to wind the big coil.

The proto board with LED to show current direction ( yeah, I cooked a few) taught me a lot
about basics of electronics with parts that are big enough to pick up and look at.

What would the diode be needed for in the doorbell? Cut the bad & choppy power source, smooth it out a little?

DC5 - Posted - 11/30/2021:  15:44:32


quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.

DC5 - Posted - 11/30/2021:  15:51:28


quote:

Originally posted by Brian T





What would the diode be needed for in the doorbell? Cut the bad & choppy power source, smooth it out a little?






My (very limited) understanding is that it smooths out the signal, and somehow makes it last longer?  Without the diode the chime does not play completely when the button is pressed.  If you hold the button, then it plays, but people do not hold doorbell buttons, they press and release.  



I built several RS kits, including a lie detector, but I never understood what any of the parts did, just followed the instructions and soldered each piece to the circuit board as instructed.  My cousin used to make his own circuit boards and build all kinds of things, including a simple chess playing computer for a science fair project, but I just didn't have the understanding to do that. 

oly - Posted - 11/30/2021:  16:08:27


Try an avionics shop at your local airport. They usually carry all sorts of stuff. Not sure what kind of price you may have to pay. I too miss Radio Shack.

banjo bill-e - Posted - 11/30/2021:  16:58:27


I got to meet and have lunch with Charles Tandy a few months before his death, and I admired a few things about the man. He was big on "do it yourself" and both Tandy leather and early Radio Shack were founded on the idea that there were customers who did in fact want to do it themselves. He built Radio Shack into a billion-dollar sales organization back when that number still meant something, and he provided for "his boys" as he called the store managers. Our compensation was linked to performance, and he made sure that we were educated in the factors that created profit or loss. It was a demanding job but I got an education out of it that was more valuable than my business degree. He offered employee investment plans which made it possible for managers to acquire a sizeable nest egg over the years, one of many things that changed for the worse shortly after he died and the vultures took over. They were already circling when I met him.

bubbalouie - Posted - 11/30/2021:  17:06:35


That's cool Bill! I wasn't sure if it was just a Canadian thing. There's been other threads here that mentioned R.S. but I hadn't noticed anyone talking about the leather side.



I remember you could buy whole hides there.

Ron C - Posted - 11/30/2021:  22:36:59


I, too, miss Radio Shack!



I used to haunt yard and estate sales when I was attending university in the mid-1960s and then, again, in the late 1960s (with a 2-year break in between). I couldn't afford new stereo/Hi-Fi equipment, so I would find an old Dynaco Amp, Pre-amp, or similar piece of equipment (often built as a kit, or sometimes a commercially built unit) that was "dead," and would pick it up for very little cash. Usually, it was the electrolytic power supply capacitors that leaked and other electrolytics were of poor quality. I'd go to Radio Shack mostly (and other electronic supply houses) and buy higher quality capacitors (polypropylene or mylar or other good capacitors) and replace the ones in the "expired" unit. Sometimes I'd replace the cheapo resisters with military spec resistors. A friend had an oscilloscope and the ability to use it. We would set the electronic equipment up to RIAA standards and I then had a fine piece of sound reproducing equipment.

1935tb-11 - Posted - 12/01/2021:  05:40:02


my hard wired door bell quit working many years ago,,i have never replaced it ,, i hear they got wireless ones now ,,, maybe its time..but then again nobody comes to see me anymore unless they want something.... maybe i will just leave it alone

Owen - Posted - 12/01/2021:  06:22:50


Wireless??   Hard-wired??   



Lots of [good?] selection/ideas here: google.com/search?q=brass+door...amp;dpr=1 



and here: google.com/search?q=wooden+doo...zSzqhTaAM



I've tried [unsuccessfully] a couple of times via the yocal on-line garage sale site to finagle a used/scrap solenoid typpically foound in chimes of this ilk



 VINTAGE 1960'S MID Century Modern NuTone Doorbell Chimes Brady Bunch Style  - $173.24 | PicClick



....so I can "re-purpose" (?)  it to jack-up the shop thermostat from the house; going wireless is an option, but putterers gotta putter.    



[Terry, considering your question to Sherry, I dunno which thread my post belongs in.  cheeky ]



.... now back to regular programming..........


Edited by - Owen on 12/01/2021 06:28:33

J e f f - Posted - 12/01/2021:  07:05:21


quote:

Originally posted by DC5

quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.






I have 1N4007 diodes, which are rated at 1000V, 1A. It's similar to the diode Terry mentioned, just a higher voltage rating. It'll work for your application. The diode is used, but it was used only on solderless breadboards, so the leads have never been clipped and it has never been soldered in place. Private message me a shipping address and I mail it to you. I'll send you 2 each, in case you jack-up the first one. They'll be taped to a 3X5 card in an envelope.

rinemb - Posted - 12/01/2021:  08:19:42


quote:

Originally posted by J e f f

quote:

Originally posted by DC5

quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.






I have 1N4007 diodes, which are rated at 1000V, 1A. It's similar to the diode Terry mentioned, just a higher voltage rating. It'll work for your application. The diode is used, but it was used only on solderless breadboards, so the leads have never been clipped and it has never been soldered in place. Private message me a shipping address and I mail it to you. I'll send you 2 each, in case you jack-up the first one. They'll be taped to a 3X5 card in an envelope.






How cool is that!  Brad

DC5 - Posted - 12/01/2021:  09:42:22


quote:

Originally posted by rinemb

quote:

Originally posted by J e f f

quote:

Originally posted by DC5

quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.






I have 1N4007 diodes, which are rated at 1000V, 1A. It's similar to the diode Terry mentioned, just a higher voltage rating. It'll work for your application. The diode is used, but it was used only on solderless breadboards, so the leads have never been clipped and it has never been soldered in place. Private message me a shipping address and I mail it to you. I'll send you 2 each, in case you jack-up the first one. They'll be taped to a 3X5 card in an envelope.






How cool is that!  Brad






very

DC5 - Posted - 12/07/2021:  12:16:52


quote:

Originally posted by J e f f

quote:

Originally posted by DC5

quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.






I have 1N4007 diodes, which are rated at 1000V, 1A. It's similar to the diode Terry mentioned, just a higher voltage rating. It'll work for your application. The diode is used, but it was used only on solderless breadboards, so the leads have never been clipped and it has never been soldered in place. Private message me a shipping address and I mail it to you. I'll send you 2 each, in case you jack-up the first one. They'll be taped to a 3X5 card in an envelope.






Jeff, they arrived in todays mail, and it only took me two tries to get it installed correctly. smiley  The bell worked both ways, but the light up button only worked one.  I'm going to blame someone else for wiring the switch wrong - even though it might have been me.  Thank you again for your assistance, and again I'm very sorry over the loss of your dog.  Mine just had major surgery on Friday and has to go in again this week to have a drain tube removed.  She's getting on in years, but we feel we're responsible for helping her as much as we can, even though she just showed up one day because a previous owner abandoned her "in the country". 

J e f f - Posted - 12/07/2021:  15:14:22


quote:

Originally posted by DC5

quote:

Originally posted by J e f f

quote:

Originally posted by DC5

quote:

Originally posted by J e f f

I have some diodes at work. I'll check and see if any of them match the specs of the diode that Terry mentioned. If any are the right kind, I can mail you one in an envelope. No charge.






That would be awesome Jeff.






I have 1N4007 diodes, which are rated at 1000V, 1A. It's similar to the diode Terry mentioned, just a higher voltage rating. It'll work for your application. The diode is used, but it was used only on solderless breadboards, so the leads have never been clipped and it has never been soldered in place. Private message me a shipping address and I mail it to you. I'll send you 2 each, in case you jack-up the first one. They'll be taped to a 3X5 card in an envelope.






Jeff, they arrived in todays mail, and it only took me two tries to get it installed correctly. smiley  The bell worked both ways, but the light up button only worked one.  I'm going to blame someone else for wiring the switch wrong - even though it might have been me.  Thank you again for your assistance, and again I'm very sorry over the loss of your dog.  Mine just had major surgery on Friday and has to go in again this week to have a drain tube removed.  She's getting on in years, but we feel we're responsible for helping her as much as we can, even though she just showed up one day because a previous owner abandoned her "in the country". 






Glad it worked out for you, Dave. And I wish her a speedy recovery.

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