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 two transistor timer can be used to measure short time intervals. The power supply...
We found this circuit in documentation from the 90s. The circuit has a latch. The power supply must...
This circuit is from an Italian publication from 1988, but it can be assembled today because the...