Found in a 1970 EEE, this circuit uses general-purpose transistors of the time. Transistors support equivalents and the ramp time ranges from 0.1 seconds to a few seconds, depending on C1.
Found in an American publication from the 90s, this circuit allows the supply of 3, 6 and 9 V...
This circuit was found in Motorola's 1968 documentation. It can be built on current equivalent...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...