LM331 Voltage Square Root to Frequency Converter (CB14438E)

This circuit is from 1994 documentation by National Semiconductor. What it does is convert the square root of a voltage to a proportional frequency.

| Clique na imagem para ampliar |

Clef Generator (CB827E)
This circuit produces a clef sound when a pulse is applied to its input. The damping effect is...
High frequency VCO (CB20604E)
This circuit can generate signals up to 100 kHz. Found in documentation from the 1980s, it makes...
Colpitts Crystal Oscillator (CB19355E)
The crystal used in this oscillator can have frequencies up to 30 MHz or more, depending on the...