Raspberry Pi Controlled DC Load
“A DC Load is useful for testing lots of different things. If you have a power supply and want to make sure it’s able to deliver its fully designed potential, then you can use a DC Load to test …
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Utilizing the circuit designs perfected for quad op-amps, this dual op-amp features low power drain, a common mode input voltage range extending to ground/VEE, and single supply or split supply operation. The LM358 series is equivalent to one-half of an LM324. These amplifiers have several distinct advantages over standard operational amplifier types in single supply applications. They can operate at supply voltages as low as 3.0 V or as high as 32 V, with quiescent currents about one-fifth of those associated with the MC1741 (on a per amplifier basis). The common mode input range includes the negative supply, thereby eliminating the necessity for external biasing components in many applications. The output voltage range also includes the negative power supply voltage.
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DIY Active Load
“I wanted to test a pc power supply At first I was messing about with some big resistors but then I decided it would be nice to have an “active load” that you can set to a particular current. You …
more ...Battery (Lithium, NiMH, NiCd) Capacity Tester Using Arduino
“The increased interest in IoT and electric automobiles around the world is driving an increase in the use of Lithium-Ion/Lithium-Polymer/NiCd/NiMH batteries as more devices and applications are using them, due to their high energy storage capacity to …
more ...SPWM Generator Module (without Using Microcontroller)
“Hello everyone,welcome to my instructable! I hope you all are doing great. Recently, I got interested in experimenting with PWM signals and came across the concept of SPWM (or Sinusoidal Pulse Width Modulation)where the duty cycle of a …
more ...IoT Power Module: Adding an IoT Power Measurement Feature to My Solar Charge Controller
“Hello everyone, I hope you all are great! In this instructable I am going to show you how I made an IoT Power Measurement module that calculates the amount of power generated by my solar panels, that is being utilized …
more ...DIY Power Measurement Module for Arduino
“Hello everyone, I hope you are doing great! In this instructable I am going to show you how I made this Power meter/ Wattmeter module for use with an Arduino board. This power meter can calculate the power consumed by …
more ...Arduino Wattmeter - Voltage, Current and Power Consumption
“A device can be utilized to measure the power consumed. This circuit can also act as a Voltmeter and Ammeter to measure voltage and current. Hardware Components: - Arduino Uno - LCD 16 X 2 - LM 358 Op-Amp - 7805 Volage regulator - Potentiometer …
more ...Battery Capacity Tester Using Arduino - Lithium-NiMH-NiCd
“Features: Identify a fake Lithium-Ion/Lithium-Polymer/NiCd/NiMH battery Adjustable constant current load (can also be modified by the user) Capable of measuring the capacity of almost any kind of battery (below 5V) Easy to solder, build, and use, even …
more ...Magnetic Levitation
“Let there be light! In this tutorial we’ll build a basic magnetic levitator. This guide will go over some of the theory, how to use a magnetic field sensor, and how to use one to build a basic levitation …
more ...DIY Arduino Battery Capacity Tester - V2.0
“Nowadays fake Lithium and NiMH batteries are everywhere which is sold by advertising with higher capacities than their true capacity. So it is really difficult to distinguish between a real and a fake battery. Similarly, it is difficult to know …
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