This circuit was obtained from an American technical manual from the 80's. The integrated circuit is an operational of the time that can be replaced by a modern equivalent.
This very high voltage (VHT)generator was found in a 1995 documentation. The transistors must be...
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...
This simple circuit does not use relays, directly activating an audio oscillator when the light...