This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the transistor can be of any type and is battery powered since the consumption is very low.
When triggered, this circuit causes a lamp to automatically reduce its brightness until it goes...
This circuit allows the "recovery" of weak signals recorded on tape that correspond to programs. The...
This voltage inverter was found in a 1960's Mullard manual. The transistors are from that time. No...