Found in a 90s Hands On Electronics, this small preamp finds applications like microphones and other sources. Its gain is 3 dB with a response of 120 to 20 000 Hz.
We present a circuit formed by six voltage comparators. Each comparator will analyze the voltage...
This circuit can generate time base signals from 5 to 1500 Hz. We find it in a documentation about old neon...
In this circuit the CA3140, an operational amplifier, is used as a comparator with the zener diode...