About voltmeter
- Voltmeters measure voltage.
- Voltage is measured in volts, V.
- Voltmeters are connected in parallel across components.
- Voltmeters possess a extremely higher resistance
Connecting a voltmeter in parallel
Measuring voltage at a stage
When testing circuits you often have to find the voltages at numerous factors, for instance the voltage at pin 2 of a 555 timer chip. This can seem complicated – where should you connect the second voltmeter lead?
- Connect the black ( damaging -) voltmeter lead to 0V, normally the negative terminal of the battery or power provide.
- Connect the red ( constructive +) voltmeter lead to the point you exactly where you need to measure the voltage.
- The black lead can be left completely connected to 0V whilst you use the red lead as a probe to measure voltages at numerous factors.
- You may wish to make use of a crocodile clip around the black lead to maintain it in location.
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