.. up to 500MHZ. However instead of using a PIC and LCD, I am using a simple LM3914 Bar Graph IC for display of db levels. Meter may be powered from a 9V battery or external 12V DC adapter. A built-in 78L05 regulator is used to power ...
.. is a simple voltage and current meter that uses the Texas Instruments INA219 chip and Texas Instruments MSP430 LaunchPad Development kit . Voltage ...
.. will produce usable results at a low cost. Figure 1. If the simplest version is required, use an inexpensive volume-unit meter to replace the 0- to 100-uA meter. Three LEDs are used; experimentation will indicate which device has the ...
.. to measure the power consumption of a device. In this project we are building one (Figure 1). Figure 1. DIY Digital AC Watt Meter. This is an AC Watt Meter which can measure the real power consumption of a device connected to the ...
.. industrial heating systems, and other systems in which the load voltage and current are both variable. The power meter/controller in Figure 1 uses the principle that power is the product of voltage and current. The typical ...
.. one? If you can do it better, then do it. So what's better about my design (Figure 1)? Figure 1. USB Voltage/Current Meter measures voltages up to 22 volts and current up to 5 amps. The USB Voltage/Current meter has the following ...
.. battery testers. For today’s tutorial, we will add another tool to the list by examining the development of a Miliohm meter (Figure 1). Figure 1. Arduino based Milliohm Meter with LCD display. A milliohm meter is a device used in ...
.. previous Design Idea describes an interesting and useful method for using a moving-coil analog meter to measure currents in the less-than-1A range ( Reference 1 ). The design offers considerable flexibility in ...