Up to now, this battery level indicator design was limited to 12 & 24V applications. In past circuits, the use of fixed resistors greatly simplifies setup. However, fixed resistors resulted in ...

On the cranking side of the engine, added displacement and higher compression ratios also place a greater load on the starter circuit. Diagnosing problems with either circuit can be challenging. To ...

This is a take-off on Mr. Marian’s “Simple Micro Ampere Meter Circuit” that utilizes active circuitry and an analog meter to make sensitive DC current measurements. A reader subsequently asked if it ...

If the alternator is functioning correctly, it's likely that your dead battery was caused by a computer module that isn't shutting down when you turn off the car. If your alternator passes the ...

The test supply voltage is now set to 11.8 V dc, which is the voltage of a drained battery. VR2 is then adjusted so that it just turns off the transistor again.

Battery cell open circuit voltage (OCV) is one of the most important measurements made on the cell during manufacturing to determine cell performance quickly and reliably.

An oscilloscope gives the following display for the electricity from a battery. Figure caption, Oscilloscope trace showing battery voltage: a straight horizontal line at the top of the screen. The ...