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Interface Circuit for PC Soundcard Oscilloscope – Circuit Schematic
Interface Circuit for PC Soundcard Oscilloscope
For simple electronic circuits, it may be sufficient to get a qualitative insight on dedicated electrical signals. This interface circuitry allows to use the li...
high resistance voltmeter circuit diagram – Circuit Schematic
high resistance voltmeter circuit diagram
A high-input-resistance op-amp, a bridge rectifier, a microammeter, and a few other discrete components are all that are required to realise this versatile circ...
PC computer based frequency meter circuit diagram – Circuit Schematic
PC computer based frequency meter circuit diagram
Here is a simple technique for measuring frequencies over quite a wide frequency range and with acceptable accuracy limits using a PC. It follows the basic tech...
lm 3915 vu meter – Circuit Schematic
lm 3915 vu meter
* This meter looked like it works well: YouTube - IndikG tor vybuzenG­ s LM3915 but the schematic is quite different. Google Translate If I followed that schem...
reading electricity meter ir impulses – Circuit Schematic
reading electricity meter ir impulses
Yesterday I was triyng to read the infrared impulses from my electricity meter. The phototransistor I`m using, can see the IR from all the remotes in the house....
emf meter project – Circuit Schematic
emf meter project
Look at the left side of the circuit (sensing coil and op-amp). When I wired mine the way shown in the schematic, it wouldn`t pick up anything. I didn`t have a ...
8 channel thermocouple based temperature data logger – Circuit Schematic
8 channel thermocouple based temperature data logger
You need to wire 8 Max6675 ics to a microcontroller. You can parallel all the clock inputs. The NCS lines of numbers 1 and 2, 3 and 4 etc can be connected toget...
Open and Short Circuit Test on Transformer – Circuit Schematic
Open and Short Circuit Test on Transformer
Open and Short Circuit Test on Transformer are done to elect equivalent circuit of transformer, voltage regulation of transformer and efficiency of transformer....
meter circuit – Circuit Schematic
meter circuit
AC level meters such as VU meters. . DC level meters such as signal meters. Functions. Display Nine red or green LEDs display the input level in the shape of a ...
Digital Remote Thermometer – Circuit Schematic
Digital Remote Thermometer
Digital Remote Thermometer Remote sensor sends data via mains supply Temperature range: 00.0 to 99.9 C Transmitter circuit diagram: Transmitter parts: R1,R3=100...
Electronic Tachometer – Circuit Schematic
Electronic Tachometer
Here is a simple Tachometer schematic. The basis of the frequency converter circuit-current, which converts the input signal into a proportional current measure...
Control Single Chip Temperature Data Logger – Circuit Schematic
Control Single Chip Temperature Data Logger
A data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, et...
Very simple voltmeter with ic741 – Circuit Schematic
Very simple voltmeter with ic741
This circuit can be used to measure the voltage to 15 volts.Using the current from the battery 9 volt,At 23 mA only. Input circuit has a diode, to protect the.....
Cheap frequency meter by CA3130 – Circuit Schematic
Cheap frequency meter by CA3130
This cheap frequency meter circuit that we show to you. Suitable for general use in small laboratories. Because cheap, easy to build. And Qualified enough. For ...
Precision Peak voltage detector with a long memory time – Circuit Schematic
Precision Peak voltage detector with a long memory time
To check the peak voltage of the signal to change at any time. Measuring with a multimeter will not do it. We recommend this circuit. It may help you. In this c...
Multi function frequency meter 0-100MHz using ICM7226B – Circuit Schematic
Multi function frequency meter 0-100MHz using ICM7226B
The Multi function frequency meter is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures.....
vary Precise Lc Meter – Circuit Schematic
vary Precise Lc Meter
Well this is a Very Accurate LC Meter based on PIC 16F628A. Having inspired from surprisingly accurate LC Meter. This is my attempt to build an accurate L/C met...
Polyphase energy metering using ic – Circuit Schematic
Polyphase energy metering using ic
how do I build a circuit for digital dead out of 3 phase power consumption in home using any chip like ADE7762 ? I am interested in Polyphase Energy Metering us...
reference design modern prtd sensors and delta sigma adcs – Circuit Schematic
reference design modern prtd sensors and delta sigma adcs
This article explains how platinum resistance temperature detectors (PRTDs) can perform measurements over wide temperature ranges of -200 °C to +850 °C, with ...
Two-LED Voltage Indicator – Circuit Schematic
Two-LED Voltage Indicator
There are many applications where the accuracy of a digital or analogue (bar graph) is not required but something better than a simple low/high indicator.....