Found in older Signetics documentation, this circuit generates signals from 30 Hz to 25 kHz. Operational amplifiers are from the time, as is the matching pair of transistors.
With this circuit it is possible to monitor the charge and discharge of a battery. The circuit is...
This high pass filter was found in the February 1996 Electronics Now magazine. The circuit...
This automatic nickel-cadmium or NiCad battery charger was found in European documentation from...