Using the 741 this circuit can be adjusted to values between 1 Hz and 100 kHz. The power supply must be symmetrical. We found it in the Radio Electronics magazine of November 1973.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
Found in a Popular Electronics from the 9s, this circuit has output for RS-232 interfaces and current...
Photodiodes can be used to sense moving objects, such as optical switches and encoders. In the...