Suggested by Amperex in 1968, this circuit is intended for hearing aids. The integrated circuit used, a TAA370 is not common today.
This circuit can modulate a laser rate at frequencies of 50 kHz. We found the old documentation. The bipolar...
This circuit was found in the May 1984 issue of Radio Electronics magazine. It analyzes the...
This circuit can be used as a signal when powered by a car battery, as it also works with 12 V, or...