This old circuit is suitable for signaling applications. The lamp must be incandescent, and the triac must be mounted on a heat sink. The frequency is adjusted in the 1 M trimpot.
The TDA7053 consists of a class B stereo amplifier, formed by two amplifiers connected in bridge...
This circuit was found in a 1966 publication. Its purpose is to identify high voltages by lighting a...
This microtransmitter operates at a frequency between 3.5 MHz and 10 MHz determined by the...