Found in old documentation as permanent security lighting, this circuit uses common components. The lamps can be replaced by fluorescent inverters or LEDs with appropriate series resistors.
We found this circuit in the Philips integrated circuits manual of 1990. The circuit must be...
We found this configuration in a documentation for radio amateurs from 1974. The circuit can be...
This circuit was found in old documentation but uses components that are still common. The circuit...