Function generator (CB7594E)

Found in a 90s 73 magazine for radio amateurs, this circuit makes use of common operational amplifiers.

| Clique na imagem para ampliar |

High Impedance Differential Amplifier (CB4896E)
Operational amplifiers used in this 80's circuit is not very common today, but the setting can be...
TCA9548A 8-Channel I4C Switches
July 2017 - Texas Instruments' new 8-channel digital switches for I2C applications can be found at...
AGC Reverse for Transistor Radios (CB4144E)
This circuit was found in an American 1980s documentation. The transistorized step is the...