New
Found the same burnt out chip on both boards .
4054, Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
spike
Search found 10 matches
- Fri Aug 06, 2021 8:17 am
- Forum: General Discussion
- Topic: Akura Retro Phono n BT Player AITVS550 BTRB
- Replies: 3
- Views: 26473
- Thu Aug 05, 2021 6:11 pm
- Forum: General Discussion
- Topic: Akura Retro Phono n BT Player AITVS550 BTRB
- Replies: 3
- Views: 26473
Akura Retro Phono n BT Player AITVS550 BTRB
Hi have been given a couple of Akura Retro Phono n BT Players and of course they don't work, where do I start to test voltages etc on it, getting 5vdc out of transformer and to the board, the battery is giving out 3.7vdc , don't realy know where to test for any voltages , tried to find a schematic e...
- Thu Dec 17, 2020 10:40 am
- Forum: General Discussion
- Topic: IR BEAM BREAK SENSOR
- Replies: 4
- Views: 20337
Re: IR BEAM BREAK SENSOR
Schematic is by " dodgydave"
- Wed Dec 16, 2020 7:04 pm
- Forum: General Discussion
- Topic: IR BEAM BREAK SENSOR
- Replies: 4
- Views: 20337
Re: IR BEAM BREAK SENSOR
Hi
Have done a revised schematic as attached ! , to give me 2 sec delay.
cheers
Spike
Have done a revised schematic as attached ! , to give me 2 sec delay.
cheers
Spike
- Tue Dec 15, 2020 10:09 pm
- Forum: General Discussion
- Topic: IR BEAM BREAK SENSOR
- Replies: 4
- Views: 20337
Re: IR BEAM BREAK SENSOR
Would this do .
cheers
Spike
cheers
Spike
- Tue Dec 15, 2020 3:29 pm
- Forum: General Discussion
- Topic: IR BEAM BREAK SENSOR
- Replies: 4
- Views: 20337
IR BEAM BREAK SENSOR
Hi Am wanting to make a "IR BEAM BREAK SENSOR" as per attached schematic! . Also I would like to add some sort of “Time Delay” to the schematic , so when the beam breaks, and the relay gets activated , would like the relay to stay activated for a couple of seconds after the object has pass...
- Fri Dec 04, 2020 8:06 am
- Forum: General Discussion
- Topic: Paper Shredder ir paper detector
- Replies: 2
- Views: 15815
Paper Shredder ir paper detector
Hi I have a Paper Shredder that ir sensor is not working, changed Caps still no luck, so have given up on that part, the Shredder itself has hardly had much use, the motor works fine ( in reverse ) . What I am wanting to do is make a small ir proximity paper detector to operate the 24v relay on the ...
- Sun Mar 06, 2016 1:45 pm
- Forum: General Discussion
- Topic: Fire Fly drawing
- Replies: 4
- Views: 4307
Fire Fly drawing
Hi I am attaching a drawing for a flickering LED solar charged , I am wanting to change the supply voltage to 2.4v ( from 2 x 1.2v Ni-MH ) and using 2 x solar panels from the pound shop ( giving out 5.6v ! ) , driving a flickering LED 1.8v to 2.2v . What would I have to change to obtain my result ! ...
- Thu Feb 04, 2016 9:05 am
- Forum: General Discussion
- Topic: File uploading
- Replies: 1
- Views: 2223
File uploading
Hi
Is there a problem with attaching a file like a drawing etc that is in a .pdf doc format ! , most of my schematics are that format .
cheers
spike
Is there a problem with attaching a file like a drawing etc that is in a .pdf doc format ! , most of my schematics are that format .
cheers
spike
- Wed Feb 03, 2016 6:08 pm
- Forum: General Discussion
- Topic: Firefly Jar
- Replies: 1
- Views: 2001
Firefly Jar
Hi I am wanting to a make a Firefly Jar , I found the project on american site , I just wanted to know if anyone on here can help me with making it and sourcing the items info as follows . This is the info from the web site , I will attach a drawing ! : DESCRIPTION: I'm calling it the Firefly Jar si...