We found the circuit of this Japanese transistorized commercial receiver in a documentation from the 1960s. It is a radio for the medium wave range with 6 transistors and 9 V power.
This simple digital circuit tester can work with TTL technology when powered by 5 V and with CMOS...
This circuit generates 24 V positive from a 12 V supply. The maximum output is 1 A and the power...
This small power supply for low currents (5mA) is suitable for power low-power TTL experimental circuits....