This regulator circuit is from Motorola documentation from 1969. It makes use of an integrated regulator of the time. With the indicated transistor, a current of up to 5 A can be obtained.
This circuit was obtained in a 1974 documentation. It shows how to use a JFET as a low intensity...
Schmitt Triggers convert a signal of any waveshape in square signals or pulses. The circuit shown...
This circuit was found in a 1992 publication. The critical component is the photodiode, but...