3-tubee reflex receiver (T1658E)

Found in a 1924 documentation, this circuit is powered by 3 batteries, two of which are high voltage. The output is a high impedance headphone jack.

| Clique na imagem para ampliar |

Phase Shift Oscillator (CB14952E)
This traditional circuit generates a 200 Hz sinusoidal signal. The frequency depends on the...
Active rectifier (CB7065E)
This circuit supplies a continuous voltage at its output, which is the peak value of the...
CB15908E Photodiode Amplifier (CB15908E)
This circuit is suggested by National Semiconductor and has an excellent gain, for a photodiode as a...