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PIC 16F88 Digital Thermometer Light Meter and resistance ohm meter – Circuit Schematic
PIC 16F88 Digital Thermometer Light Meter and resistance ohm meter
My original idea for this project was simply to try and interface the WINTEK WD-C2401P lcd panel to the pic (see my previous post). I figured it would be fun to...
SEM/STEM detectors and CRTs – Circuit Schematic
SEM/STEM detectors and CRTs
The TEM that we have, the Jeol 2000fx is equipped with two extra detectors, one secondary electron detector, i. e. SEM imaging, as well as a STEM detector at th...
Implementing the frequency counter – Circuit Schematic
Implementing the frequency counter
Connecting the CPLD board to a ChipKit board, to be able to read the measured frequency....
Bat detector frequency counter – Circuit Schematic
Bat detector frequency counter
This text describes preliminary plans for a frequency meter for a bat detector. It measures the frequency of the local oscillator in a heterodyne type bat detec...
led display voltmeter in probe model circuit – Circuit Schematic
led display voltmeter in probe model circuit
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Simple Circuit to Turn your Oscilloscope into a TDR – Circuit Schematic
Simple Circuit to Turn your Oscilloscope into a TDR
This simple circuit allows you to use your oscilloscope as a Time Domain Reflectometer (TDR). This is how it works. Send a pulse down a cable and watch for the....
Lux meters attiny26-16 light measurement circuit – Circuit Schematic
Lux meters attiny26-16 light measurement circuit
Lux meter circuit atmel attiny26-16 microcontroller based on the value of the LED displays on the display lux with LEDs placed on 2sk1061 MOS....
Improvements in the Design and Performance of PWLL – Circuit Schematic
Improvements in the Design and Performance of PWLL
The p-Wave Locked Loop provides instantaneously the p to p time interval of the applied ECG and enables us to perform heart rate variability studies on the basi...
Optical tachometer schematic diagram – Circuit Schematic
Optical tachometer schematic diagram
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Operating Systems Latency Measurement and Analysis – Circuit Schematic
Operating Systems Latency Measurement and Analysis
There is increasing interest in using PC and Workstation platforms in reactive sound synthesis and processing applications. However, few operating systems were ...
DS1621 PC Thermometer Circuit – Circuit Schematic
DS1621 PC Thermometer Circuit
The following circuit is PC thermometer using DS1621. Feature : plug in any free PC com port, range of -20 to 125°C, Centigrade (°C) of Farenheit (°F) scale,...
Meter circuit schematic diagram – Circuit Schematic
Meter circuit schematic diagram
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Capacitance Meter Circuit – Circuit Schematic
Capacitance Meter Circuit
The circuit diagram of simple capacitance meter has been published here. The core part of this circuit is the frequency to voltage....
ADC Tester (A2100) – Circuit Schematic
ADC Tester (A2100)
The ADC Tester (A2100) is a LWDAQ device that records the output and power consumption of two ADC s. Its original purpose was comparative testing of two ADCs at...
LWDAQ Driver (A2037) Manual – Circuit Schematic
LWDAQ Driver (A2037) Manual
The LWDAQ Driver (A2037) is a Long-Wire Data Acquisition ( LWDAQ ) Driver. You will find an introduction to the LWDAQ in the LWDAQ User Manual. The A2037 provid...
LM3914 Low Power LED Voltmeter – Circuit Schematic
LM3914 Low Power LED Voltmeter
This is a low power voltmeter circuit that can be used with alternative energy systems that run on 12 and 24 volt batteries. The voltmeter is an expanded scale ...
Mains Frequency Monitor circuit and explanation – Circuit Schematic
Mains Frequency Monitor circuit and explanation
Here is a simple frequency counter designed to monitor the 240VAC mains supply. It as a frequency range of 0-999Hz, so it could also be used with 400Hz equipmen...
ESR Meter – Circuit Schematic
ESR Meter
The ESR Meter is basically an AC Ohmmeter with special scales and protective circuitry. It provides a continuous reading of series resistance in electrolytic ca...
High impedance DC Voltmeter by IC CA313048 – Circuit Schematic
High impedance DC Voltmeter by IC CA313048
The MOSFET input of the CA3140 makes it ideally suited for use in a high impedance DC voltmeter. Switch S1 is the range selector. The input impedance is limited...
ICL7107 Digital LED Voltmeter – Circuit Schematic
ICL7107 Digital LED Voltmeter
This circuit is a digital voltmeter with LED display. It`s ideal to use for measuring the output voltage of your DC power supply. It includes a 3. 5-digit LED d...