This switched regulator configuration was found in Motorola's 1969 documentation. The integrated circuit is from that time and is difficult to obtain today.
This transmitter, found in Raytheon documentation from 1957, has a range of a few meters. L1 can...
We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an...
This circuit can be used in the car to control the windscreen wipper or with other appliances at...