Digital Clock from Ric Carpenter - Need help identifying electronics.

[Brian Blazer]

Hello all. We have a LED digital clock that was built by the late Ric Carpenter. I accidentally hooked the positive wire to the negative on the battery and the negative to the positive. The clock popped the diode and this black 5 pin thing which I believe is a voltage regulator. I could be completely wrong.

If anyone has one of his clocks, I would really appreciate a photo of this part. I am unsure if he made more than one.

If we can't locate another clock, would anyone know what this part is actually called so I can source somewhere?

Thanks,
Brian

 

[dave roach]

Brain
You have a PM

 

[Daniel's Racing]

5 pin Transistor regulator.

https://www.ebay.com/itm/3737559464...1291&msclkid=f49c899fbec51e274b6dede3343657f1
There needs to be a appropriately sized inline fuse and diode to prevent reverse polarity from doing any damage whatsoever. Would be smart to add this protection into the circuit if you are able to get it repaired. That way it will not harm anything if you reverse the leads.

 

[Brian Blazer]

Thanks Daniel! I will give it a try.

 

[Steve White]

Brian, you can connect a diode in series in the input to prevent future mishaps as noted in other post by Daniel's Racing. Or, better yet put a full wave bridge rectifier in the power leads input circuit so it will function normally regardless of battery polarity at the input wires. Diodes have a .7V drop across them so it will limit the input voltage from the battery to the clock, however the clock circuitry should function normally on 12V and a fully charged 12V battery depending upon type will have ~12.8VDC at the terminals.

Very simple to do. Let me know if you are interested and I'll look up the parts and draw up a circuit diagram - can also walk you through doing the installation. Looks like some of the other forum members are guiding you this direction too.

For inline fuse, start at 1A rated and see if it holds if you can get it running again.

 

[Daniel's Racing]

Buying a board is probably easiest way to get reverse polarity protection. That along with fuse just enough for the load should prevent future smoke releases.

https://www.ebay.com/itm/2842265443...s=ispr=1&amdata=enc:1FdVOfXcmQ9S9aOM65Yda3g82
This board in the 15 volt output may be the same replacement board for one that is burnt up.

https://www.ebay.com/itm/1920295086...rentrq:ffdd0c541880a6e6986c401efffc53d8|iid:1