This circuit was obtained from an 80's Electronic Engineering. The circuit detects ice formation by triggering a warning light. The operational amplifier is of the time.
We got this circuit in a publication of 1987. This is an audio limiter, a circuit that cuts peaks...
When S1 is in 1, the circuit operates with of half the total power applied to the load. When in...
With the figure circuit it is possible to control the amount of heat generated by the heating...