Hello all.
After retrieving my Dataman S4 which was last used about 6 months ago I found it dead. Hence I am in the process of reverse engineering the PCB.
The image is a snippet of my circuit and shows the first stage power supply. 15VAC comes in, gets rectified and then... meets a strange SCR based circuit.
What I know about SCRs one could write on the back of a postage stamp. At a WILD guess I think this some kind of elaborate regulator (at 8V?).
I wonder if there are any one here that can explain this circuit please. I wonder why the original designer plopped for such a whacky design instead of using a standard design.
Regards & thanks in advance, A
After retrieving my Dataman S4 which was last used about 6 months ago I found it dead. Hence I am in the process of reverse engineering the PCB.
The image is a snippet of my circuit and shows the first stage power supply. 15VAC comes in, gets rectified and then... meets a strange SCR based circuit.
What I know about SCRs one could write on the back of a postage stamp. At a WILD guess I think this some kind of elaborate regulator (at 8V?).
I wonder if there are any one here that can explain this circuit please. I wonder why the original designer plopped for such a whacky design instead of using a standard design.
Regards & thanks in advance, A
