Instrumentation amplifier with variable gain (CB20986E)

Found in Popular Electronics from the 90s, this amplifier uses components from the time. The circuit has differential inputs.

| Clique na imagem para ampliar |

Very Low Frequency Oscillator (CB6262E)
This PUT oscillator circuit has a frequency of 1 Hz. We find it in a General Electric...
Burnt light sensor (CB23735E)
This circuit for the car uses LDRs as sensors and does not need to be connected to the lamp. The...
Smart Arrow (CB7248E)
This circuit of an Electronics Now from the 90's produces an intelligent direction signal that has...