Found in a 1969 EEE, this circuit is based on an operational amplifier of the time and on old type MOSFETs. The components support modern equivalents.
E) This soft start dimmer was found in a Motorola documentation from 1968. However, it can be...
This circuit, from a 1975 Motorola manual, uses a power Darlington transistor of the time. We can...
This circuit, based on a 555, was found in a Popular Electronics from the 90s. The circuit has the...