Vintage Analog Multimeter (T1276E)

This circuit was taken from the Radio Craft magazine of June 1948. The instrument is a 200 uA microammeter which guarantees excellent sensitivity.

1.2 to 1.4 V Power-Supply (NI025E)
Common general purpose silicon diodes when direct biased provide a voltage fall of about 0.6 to...
Voltage Controlled Resistor (CB25150E)
This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is...
STMicroelectronics MP23AB02B MEMS Audio Sensor
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...