100 MHz frequency meter ICM7216 (CB15370E)

The integrated circuits used in this configuration are not common today. The circuit is from the 1983 Intersil Databook. The indicator is 8 digits.

| Clique na imagem para ampliar |

FET Automatic Gain Control (CB13705E)
In this circuit, from a 1977 FET documentation, the FET can be BF245 or MPF102. The circuit...
Bridge Crystal Oscillator (CB6520S)
We find this circuit in an 80's EDN. The circuit can be used with equivalent operational,...
Low Pass r Sallen Key Filter (CB6939E)
This filter was found in Radio Electronics, and its configuration can be applied to any...