HeathKit AC VTVM Model AV-3

Manufacturer: HeathKit

Model Number: AV-3

Serial #:

Equipment Description: AC VTVM

Label Write-up:
An AC vacuum tube volt meter is used to troubleshoot electronic equipment. This new and improved VTVM is designed for audio measurements and low-level AC measurements in power supply filters and such. It measures voltage independent of frequency.

It is a significant overhaul of previous VTVM (vacuum tube volt meters) at the time. It offered better frequency response stability from 10 Hz to 200 KHz. And improved linearity and sensitivity. It also used the new "five-way" binding posts on the front panel.

AC is alternating current as found in house power, as opposed to DC which is direct current as found in a battery.

Dates Produced: 1956 - 1961

Original Price: $30

The museum's inventory number: MRT-490

Located at Museum in: Class Room

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