Found in 1969 RCA documentation, this circuit maintains constant current in the filament of a lamp or in a heating element. The circuit makes use of period components.
Other series amplifiers such as the MC3301, MC3401 and LM2900 can be used on this circuit. We...
The values of the components of this Mullard (Philips) circuit depend on the desired voltages. The...
This circuit uses a diode as a radiation sensor. The operational ones are old because the...