30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

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Low Voltage Monitor (CB4987E)
The circuit shown was taken from an American 80s schematic. The circuit indicates when the battery...
Humidity Monitor (CB10385E)
This circuit was obtained in a 1980 publication, but it can be easily assembled today, as all...
Simulation of Resistive Sensors (DMSB003E)
The MultiSIM BLUE doesn’t have resistive sensors, but you can simulate them using common...