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1.5v to 9v battery tester – Circuit Schematic
1.5v to 9v battery tester
Here the circuit diagram of DC battery tester designed by Matthew B. This circuit can be used to measure DC battery from 1. 5V up to 9V. Component Parts List: R...
test_and_measurement circuits – Circuit Schematic
test_and_measurement circuits
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1MHZ Digital Frequency Meter – Circuit Schematic
1MHZ Digital Frequency Meter
This circuit is a frequency meter, low cost. It covers region 1HZ until 1MHZ. The IC1 schmitt trigger that it regulates the signal of entry and him changes in r...
Absolute-Value Meter With Polarity Detector – Circuit Schematic
Absolute-Value Meter With Polarity Detector
This circuit breaks an input voltage signal down into its components: (1) the absolute value and (2) the polarity or sign` (+ or ). It will handle direct input ...
Voltmeter To Frequency Meter Using 4528 – Circuit Schematic
Voltmeter To Frequency Meter Using 4528
Normally we often encountered the frequency meter can be used in speed sensor, tachometer, measurement or signal recurring. This frequency to voltage converter ...
VFC110: Single Chip High-Frequency Voltage-to-Frequency Converter (VFC) – Circuit Schematic
VFC110: Single Chip High-Frequency Voltage-to-Frequency Converter (VFC)
Using VFC110 chip, we can build a high frequency voltage-to-frequency converter. The features of this chip include the capability of high frequency operation, d...
Using Current Source To Make Linear Scale Analog Ohm Meter – Circuit Schematic
Using Current Source To Make Linear Scale Analog Ohm Meter
Many analog ohm meters have non linear scale, so the resolution become worse at higher resistance value. This because they use cheap current source, only a....
The ICL7135 Integrating A/D Converter Functional Diagram and Datasheet – Circuit Schematic
The ICL7135 Integrating A/D Converter Functional Diagram and Datasheet
The schematic below showsthe ICL7135 integrating analog to digital converter (ADC) functional diagram. According to the datasheet, an integrating converter is t...
Sound Frequency Meter Circuit – Circuit Schematic
Sound Frequency Meter Circuit
This sound frequency meter circuit is simple to build and can be constructed in a portable format. In can measure frequencies with a minimum level of 10 mV....
Simple High Impedance DC Voltmeter Using a uA741 Op-amp – Circuit Schematic
Simple High Impedance DC Voltmeter Using a uA741 Op-amp
Circuit diagram of this simple in design for high voltage DC Impedance. This is a circuit diagram with circuit design that was built by uA741 IC. IC is the op-a...
Schematic Diagram of Dashboard Digital Voltmeter – Circuit Schematic
Schematic Diagram of Dashboard Digital Voltmeter
If you want to to try to make a Dashboard Digital Voltmeter Circuit Diagram including part lists, the PCB building and the placement of the components, you may ...
Power line frequency meter – Circuit Schematic
Power line frequency meter
This is the meter show the frequency of a power generator, which it has voltage 110V-240V at 10-100HZ. The output sine waves are converted to square waves by....
Plasma DisplayCircuit using ICL7135 A/D Converter – Circuit Schematic
Plasma DisplayCircuit using ICL7135 A/D Converter
A circuit diagram for driving a plasma-type display using ICL7135 is shown in the following schematic. This application is one of the wide versatility variety o...
Photovoltaic (Solar Cell) Current To Voltage Converter – Circuit Schematic
Photovoltaic (Solar Cell) Current To Voltage Converter
The simplest I to V converter is the humble resistor. However, presenting a nonzero impedance to the source of input current is the disadvantage of the humble....
Opto-Isolated-Input 4-Digit Voltmeter – Circuit Schematic
Opto-Isolated-Input 4-Digit Voltmeter
The voltage that control a V/F converters will be displayed if we use a frequency counter, which is directly proportional to the input voltage. A 1 second time....
Low-frequency-tachometer – Circuit Schematic
Low-frequency-tachometer
This tachometer lets you measure heartbeats, respiratory rates, and other low-frequency events that recur at intervals of 0.33 to 40.96 seconds. The circuit sen...
Low-cost-frequency-counter – Circuit Schematic
Low-cost-frequency-counter
This counter uses a four-digit display, but with a flip of the range switch, it can display frequencies from 1 to 40 MHz, with a resolution of 100Hz. The MM74C9...
Linear Resistance Meter – Circuit Schematic
Linear Resistance Meter
Most analogue multimeters are capable of measuring resistance over quite a wide range of values, but are rather inconvenient in use due to the reverse reading s...
Led display digital Voltmeter – Circuit Schematic
Led display digital Voltmeter
Copyright of this circuit belongs to smart kit electronics. In this page we will use this circuit to discuss for improvements and we will introduce some changes...
LAN Tester circuit diagram – Circuit Schematic
LAN Tester circuit diagram
LAN tester circuit diagram provided in two designs. The first design use timer IC 555 and decade counter 4017. The second design use microcontroller ATtiny2313...