We found this circuit in a 1967 American documentation. It is a transmitter for animal research, monitoring intestinal pressure. The operating frequency is 22 kHz.
One of the most popular EPROM memories of the past is the 2716 2k x 8, whose pinout with practical use...
This circuit inverts the phase of an audio signal, maintaining its intensity. The transistors can...
In the figure we have a simple way to have a peak bargraph indicator. The amplifier is of the...