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 |

Incadescent Flasher (CB15611E)
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...
Multimeter adapter (CB7345E)
This circuit, suggested by General Electric, increases the sensitivity of a common multimeter to 1 M /...
5 V x 200 mA regulator with the LM105 (Cb14083E)
The LM105 integrated circuit consists of a voltage regulator integrated in a metallic enclosure. The...