There are numerous potential applications currently to explain the use of a noise level meter – for example, monitoring the sound output at dances, discos etc. The unit explained in […]

This simple and easy affordable millivoltmeter circuit possesses three measuring ranges of 10mV, 100mV, and 1V. RMS full scale sensitivity. The frequency response includes 1 dB points at around 20 […]

In this post we will discuss how to build a small weighing scale machine for quickly measuring the weights of small objects or metals, through LED bar graph indications. Undoubtedly, […]

Zener tester is a device used for measuring zener voltages and also for plotting variation of zener voltage with zener current. Zener testers find its use in the lab equipment […]

You may have come across many ordinary transistor gain tester circuits designs, but this specific circuit will help you to determine the gain of high frequency RF transistors quickly with […]