Interface ICL7135 Voltmeter to 89C52
This circuit is a Parallel interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities. […]
Instrumentation
Current Source for Resistance Measurement
Here is a current source you can build for resistance measurement. When the current is held constant, you know as per Ohm’s Law the Voltage […]
Ohmmeter – Simple Resistance Measurement
Measurement of resistor values in circuit configurations are required to be made often, as these might have changed in value due to various tolerance ranges, […]
Ammeter and Precision Rectifier
Studying current measurement is a prerequisite for many of the measuring techniques. The current parameter mainly specifies the power consumption in a circuit, given the […]
80C39 and MCS48 based Process Controller
The Early Microcontroller : 80C39 is a CMOS Version of 8048 the one that preceded 8031-8051. MCS48 is the set for that, MCS51 is the […]
Millivolt Meter using a LM3914 LED Dot Display
Here is a easy to read ‘Analog’ Millivoltmeter. Just like the Moving Coil Voltmeter, but does not have that resolution. This gives a easy indication […]
Analog Dial Amps-Volts-Ohms meter
This was designed, keeping in mind, that sometimes we have few components available and you could not carry your DMM somewhere, but you have to […]
Resistance Measurement Analog LED Meter
This is a LED Analog Meter, This can be used as a Resistance Meter and Low Impedance Voltmeter for Battery Levels. To measure battery voltage, […]