Klein is a big name in electrical, and the affordable Klein ET300 circuit breaker finder doesn’t disappoint. For about $30, this popular model calibrates quickly and emits a clear, loud tone and ...

This acupunture point locator circuit is used to locate the sensitive acupuncture points location on the human body. Acupuncture belongs to the traditional alternative medicine. This healing method ...

This Design Idea presents a low power short circuit finder that capitalizes on the ear’s sensitivity to changes in frequency. The heart of the circuit is a voltage-to-frequency converter (based on ...