This circuit is from a 1964 Electronic Design book that presents application ideas for transistors. The circuit uses a transistor from that time, but modern equivalents can be used.
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...
This circuit can be found in a 1970 Motorola documentation. The circuit can be implemented with general...
This circuit was obtained from a Philips documentation from 1970. It can be built on modern...