This is an improved version of the previous circuit also found in the December 1990 Radio Electronics magazine. The duty cycle is also 50%.
Found ina 1970 American documentation this fast-reading circuit uses a photodiode. Transistors...
This circuit was found in an Electronics World of 1968. The transistor can be any general purpose and...
This power source was found in a 1968 Electronics World. The transistors are from that time. The...