UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Reverse engineering Lumenition optical switch

Uncle Bulgaria · 8th May 2020, 11:24 pm

Chris, that's amazing! Well done. That looks just like the circuits I've been investigating, but with the diodes across the phototransistor and LED it's almost certain that one of the SMD components I have been wondering about is a BAW56 dual diode rather than a P-channel MOSFET. Time to test the new circuit...

8th May 2020, 11:24 pm	#18
Uncle Bulgaria Nonode Join Date: May 2016 Location: Cornwall, UK. Posts: 2,338	Re: Reverse engineering Lumenition optical switch Chris, that's amazing! Well done. That looks just like the circuits I've been investigating, but with the diodes across the phototransistor and LED it's almost certain that one of the SMD components I have been wondering about is a BAW56 dual diode rather than a P-channel MOSFET. Time to test the new circuit...