This high-power shield is isolated from the control. The circuit was found in the June 1995 Electronics Now magazine. The Triac must be equipped with a heat sink.
The LDO series (Low Dropout) TPS80 from Texas Instruments (www.ti.com) can provide output voltages...
The presented circuit uses an operational one of the time. The circuit is from an 80's manual and...
The operation of this circuit is old, but the configuration can be elaborated based on modern...