|
Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
|
Thread Tools |
31st Jul 2021, 3:47 pm | #1 |
Octode
Join Date: Jun 2005
Location: Sheffield, South Yorkshire, UK.
Posts: 1,227
|
What is it ?
I was given this project box years and recently had a look inside. There are three red spot transistors in it, a push button , a 12 pin connector, ...I think a battery connector at the back. Can anyone suggest what it was?
Last edited by Pete_kaye; 31st Jul 2021 at 3:53 pm. |
31st Jul 2021, 4:58 pm | #2 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,289
|
Re: What is it ?
I think you'll have to reverse engineer it.
__________________
Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
31st Jul 2021, 6:27 pm | #3 |
Octode
Join Date: Jan 2014
Location: Oban, Scotland, UK.
Posts: 1,129
|
Re: What is it ?
Looks like a one-shot timer to me.
|
4th Aug 2021, 5:21 pm | #4 |
Octode
Join Date: Jun 2005
Location: Sheffield, South Yorkshire, UK.
Posts: 1,227
|
Re: What is it ?
Would it be useful to anyone here?
|
4th Aug 2021, 11:09 pm | #5 |
Dekatron
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,587
|
Re: What is it ?
I would also say a timer, possibly a photographic (Darkroom) timer? They were a staple magazine project at one time, along with Slave Flashes, and other photography related gizmos.
Only thing against that theory is the lack of adjustability, but it looks as though more resistors have been added to one which was obviously originally fitted flush on the board, maybe to fiddle a precise timed period. |