Voltage controlled gain amplifier (CB8992E)

Found in a 1980s American documentation, this circuit is intended for amplifying 10.7 MHz video signals, with a gain of 100dB.

| Clique na imagem para ampliar |

Constant Current Source for LEDs (CB915E)
This circuit uses a FET to drive an LED with constante currente. The current up to 20 mA can be...
Two Stereo Light Effects (CB17150E)
This circuit was found in a 1999 publication. Its purpose is to flash two LEDs according to the...
FET Voltmeter (CB18924E)
With this voltmeter with high input resistance, voltages from 10 mV to 50 V. can be measured. FETs...