Can anyone identify this board?

Thread Starter

TJinOttawa

Joined Sep 6, 2021
2
Found this in a box of circuits-all related to Arduino, but haven't a clue about this one-about 8 X 5 cm. Any suggestions?20210906_125630_HDR-small.jpg20210906_125639_HDR-small.jpg20210906_125654_HDR-small.jpg20210906_125711_HDR-small.jpg
 

MaxHeadRoom

Joined Jul 18, 2013
23,805
You need to take note of all the IC devices and probably it will shed some light.
Or do some searching on Ebay for the same picture!
Maybe a SCR/Triac/PWM controller etc.
 

Irving

Joined Jan 30, 2016
2,197
Gbj2510 is a 700v Vr(rms), 25A If(avg) bridge rectifier.

The 3 connectors are labelled M+ M- Load, + - PWM and, hard to read, I think DC... AC ...0

My guess is there's a few big MOSFETs under the PCB.

My guess is a DC brushed motor controller maybe for 110v motor?
 

MaxHeadRoom

Joined Jul 18, 2013
23,805
You can see at least one or maybe two large device on the heatsink under the PCB.
The No's on the IC's should add some definite clues, there appears to be one 4 pin opto-isolator.
 

Thread Starter

TJinOttawa

Joined Sep 6, 2021
2
Thanks everyone. I'm even less than a novice at electronics, so I appreciate the help. The clue was "PWM motor control". Using that, I located an image at purelogic.ru. It is indeed a pwm control, often used with Mach3. Even found a diagram, although all in Russian. Thanks again.
 
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