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Electroscope – Measure electrostatic charge

Received by Email - 11/29/08

This diy electroscope circuit can precisely measure electrostatic charge. The charge to be measured is stored on C1 [...]

Electronic Stethoscope Circuit

Received by Email - 11/29/08

An electronic stethoscope is used to listen to your heartbeat and you would normally use a listening tube [...]
acupuncture point locator circuit diagram

Acupuncture Point Locator Circuit

Received by Email - 11/02/08

This acupunture point locator circuit is used to locate the sensitive acupuncture points location on the human body. [...]
field strength meter circuit schematic

Simple Field Strength Meter Circuit

Received by Email - 11/01/08

This simple circuit measures the strength of a radiated signal from a transmitter. It is commonly used by [...]
analog switch circuit schematic

Analog Line Switch Circuit

Received by Email - 10/12/08

This analog switch circuit is designed to switch on or off and analog line. it consists of two [...]
coffee thermometer circuit schematic

Coffee Thermometer Circuit

Received by Email - 10/04/08

Why measure the temperature of the coffee? Well, coffee taste depends on two things. First, how strong the [...]
temperature alarm circuit schematic

Below Temperature Monitor with Alarm

Received by Email - 10/04/08

This temperature monitor alarm circuit continuosly monitors the room temperature and beeps when the temperature drops below 20 [...]
cardiophone circuit schematic

Cardiophone Circuit

Received by Email - 07/23/08

The human heartbeat can be made audible by using this cardiophone circuit. It is basically an audio circuit [...]
proximity sensor circuit schematic

Proximity Sensor Circuit – Detect Human Presence

Received by Email - 04/28/08

This presence detector or proximity sensor circuit reacts in presence of any conductor object including humans. Sensitivity is [...]
liquid detector circuit schematic

Liquid Detector, Water Sensor Circuit

Received by Email - 04/27/08

This is a very simple liquid detector that use a relay to open an evacuation van. You can [...]
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