This simple bridge circuit can be used for impedance or resistance measurement using a high impedance earphone as an indicator. The circuit is from an American 80's documentation.
) The phasor is the ray weapon that we see in many science-fiction films. The characteristic sound can be...
This simple circuit for a high impedance magnetic phone (500 ohms or more) has been found in a...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductor of 1994....