We found this circuit in a 1980s American documentation. The operational amplifiers of the integrated circuit used can be common types in an experimental setup.
This circuit can be used in alarms, data links or áudio links using IR radiation. The circuit is...
This amplifier can amplify signals from 10 Hz to 17 MHz with more than 30 dB of gain. The circuit is...
This circuit, found in a publication from the 1970s, produces a 1 Hz sinusoidal signal....