This circuit was found in a 90s Electronic Design. The circuit directly controls a triac that is loaded with a heating element. The triac depends on the power on the load.
The circuit shown is only for analog telephone lines. I found it in Popular Electronics (1991). It...
We found this amplifier in the Philips Databook of 1990. The stereo circuit has power that reaches 6...
I found this circuit in a Popular Electronics from November 1999. The magazine is no longer...