Notes:
* Connect J2 and J3 to an Avo-meter set to 50µA range:
* Switching SW2 the four input ranges will be multiplied by 5
* Total fsd ranges are: 10mV, 50mV, 100mV, 500mV, 1V, 5V, 10V, 50V
* Set R11 to read 1V in the 1V range, with a sine wave input of 1V @ 1KHz
* Compare the [...]
The circuit of Fig.1 provides an easy yet reliable way to detect the intensity of a.c. (or e.l.f.) fields around the home or workplace. It is doubly effective because it does not merely detect the electromagnetic radiation emitted by electrical appliances, but the electromagnetic energy actually absorbed by the body.
The circuit in Fig.1 is a [...]
This is a low power voltmeter circuit that can be used with alternative energy systems that run on 12 and 24 volt batteries. The voltmeter is an expanded scale type that indicates small voltage steps over the 10 to 16 volt range for 12 volt batteries and over the 22 to 32 volt range for [...]
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