Integrator with JFET (CB6229E)

This circuit was found in an 80s National Semiconductor documentation. The configuration holds true for modern JFETs.

CMOS Time Base (CB17502E)
This circuit generates 50, 100 and 200 Hz signals from a 2.2768 MHz TV crystal. The circuit can be...
20 mA Current Drain with the LM3900 (CB14221E)
The figure shows how to use the LM3900 to drain current from a load of up to 20 mA with the...
FM Decoder (CB4601E)
Frequency modulated signals up to 500 kHz can be decoded with the PLL we show. The demodulated signal...