Dual Tuning Reflex Receiver (T1564E)

This circuit was found in a 1924 Gernsback publication. The variable capacitors are dual. Listening is through a high-impedance phone.

| Clique na imagem para ampliar |

LM308 Fast Adder Amplifier (CB4488E)
This circuit is from the 1993 Motorola Linear Interface ICs. Equivalent operating may be used and...
Avalanche Divider (CB6834E)
We found this circuit in an American documentation from 1969. The circuit works with the polarized...
Pulse Width Multiplier (CB6349E)
This circuit is intended to increase the width of a pulse. The circuit is TTL and can be used as a...