This circuit was found in a 1969 EEE. The circuit uses transistors from the era that can be replaced by modern equivalents.
This circuit controls a heating element using a triac. Triac must be fitted with a heat sink. We...
This simple unregulated half-wave font was found in old American documentation. The diode is...
This circuit is from an 80's American documentation. The circuit uses components of the time which...