This circuit was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered by a voltage of 22.5 V. The circuit includes the erasure oscillator.
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
I found this little signaling transmitter in old American documentation. The circuit has a good...
This sensitive amplifier for low current measurement uses a differential amplifier configuration with...