This circuit triggers a relay when the set temperature is reached. The circuit is from an old documentation. The relay may be equivalent according to the transformer secondary voltage.
This circuit was obtained in a Motorola manual from 1978. We can use any triac and the coupler with...
This logarithmic operational amplifier was found in the September 1994 issue of Electronics Now...
The transmitter described is intended for radio amateurs, providing a maximum power of the order of...