We present the circuit of the commercial transistor tester Sanwa SC2 sold in Japan in the 1960s. The circuit has several scales and types of test being powered by a 22.5 V battery.
This circuit was found in Maxim's documentation from the 90's. The configuration uses components...
We found this motor control circuit that uses only transistors in a 2003 documentation. The H...
This well-designed phase shift oscillator configuration was found in ancient European...