This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability with a relatively wide frequency range. In the circuit diagram the oscillator frequency is ...

3DC analysis One of the basic techniques to analyze circuits with transistors is to perform a DC analysis, which means finding the DC voltages and currents at each node and branch of the circuit.

Interval Timer Circuit and Working Fig. 2 shows the circuit diagram of the interval timer. It is built around a 230V AC primary to 12V, 1A secondary transformer (X1), five 1N4007 rectifier diodes (D1 ...

This paper concerns trigger and pulse circuits for transistors having emitter-to-collector current gain (such as point-contact units). The circuits are designed to permit reliable operation with ...

This paper surveys the history of the electric-circuit representation of the transistor over the past fifty years. During the first two decades after the transistor was announced in 1948, primary ...