DMM


Remote Data Logging for Handheld DMM

Remote Data Logging for Handheld DMM Agilent Technologies Inc. announced the introduction of a wireless connectivity solution that links up to three Agilent handheld digital multimeters to smartphones, tablets and PCs. By enabling remote viewing and control from distances of up to 10 meters, this solution enhances convenience and safety for engineers and technicians when […]


Capacitor Leakage Adaptor For DMMs

Used with a DMM on the 20V range, this circuit gives a rapid and direct measure of the leakage current of capacitors. There are two ranges, with maximum readings of about 20µA and 2mA, and the test voltage can be varied. This lets you test leakage at or near the capacitor’s rated voltage. In addition, […]


Low Ohms Adaptor For DMMs Based On An LM317 Regulator

This adaptor circuit is essentially a 100mA constant current source. It is applied across a low-value resistor of unknown value (ie, the resistance to be measured) and the resulting voltage drop can then be measured by a digital multimeter (DMM). Setting your DMM to the 200mV range will enable it to measure up to 2O […]


Low Ohms Adaptor For DMMs Based On An LM317 Regulator

This adaptor circuit is essentially a 100mA constant current source. It is applied across a low-value resistor of unknown value (ie, the resistance to be measured) and the resulting voltage drop can then be measured by a digital multimeter (DMM). Setting your DMM to the 200mV range will enable it to measure up to 2O […]


In-Situ Battery Test Probe

This item describes a simple probe that allows in-situ AA and AAA battery voltage and current drain measurements without removing the cells from the holder. In use, the probe is simply pushed between the positive end of one cell and either the negative end of the adjacent cell or the battery holder terminal. The probe […]