This circuit allows an ECG signal to be displayed on an oscilloscope. Opamps IC1a, b and d form an instrumentation amplifier with a gain of 201. IC1c amplifies the common-mode signal by a factor of 31, and supplies this signal to the right leg. The first....

This is an early test program (assembly source code), which was stored on the erasable programmable memory chip (EEPROM). Assembler programming is just 1 step above programming at the binary level...

This project is an extension of Metal Detector MkI, and shows how metal objects are detected. It is the second in a series of circuits and allows a great deal of experimentation, especially if you have a CRO (Cathode Ray Oscilloscope) and a few items to....

This circuit enables you to display four signals simultaneously using only one channel of your oscilloscope. Essentially, it switches each of the inputs through to the output in turn, with some signal massaging in between. As shown, it is suitable only for....

Build the Colpitts oscillator shown using either breadboard (proto board) or strip board, then test the oscillator`s operation using a multi meter and oscilloscope. This Colpitts oscillator produces a sine wave output in excess of 12Vpp at an approximate....

In contrast to an ordinary voltmeter, the input of an oscilloscope generally has one side (GND) connected to ground via the mains lead. In certain situati....

When this circuit is connected to a filter and an oscilloscope, the scope displays the filter`s frequency response. A frequency that sweeps from low to high is applied to a filter. An oscilloscope is triggered by* the start of the sweep and ends its trace at....

So to reduce the resonant frequency and get some useful signals, I took some washers slapped them on a bolt and some nuts and experimented. I used aOscilloscopewith FFT and changed the weight on the tip of the film until frequencies of around 40Hz were the....

This project takes after the VGA-to-Scope converter by using composite video rather than VGA signals to create a display on an oscilloscope. The circuitry in the VGA-to-Scope converter has been greatly simplified; op-amp buffers and inverters were....

This circuit enables you to display four signals simultaneously using only one channel of your oscilloscope. Essentially, it switches each of the inputs t....

The circuit in the schematic below is an infrared transmitter. The infrared beam is transmitted in a nearly line-of-sight pattern to another device with an infrared receiver. The plotted waveforms are the output voltages of the two intermediate stages....

A oscilloscope would be useful in analyzing the waveforms produced by this circuit, but it is not essential. An audio detector is a very useful piece of test equipment for this experiment, especially if you don`t have an oscilloscope. The "555" integrated....

You can start to set your Square Wave Generator up using 555 timer IC through the circuit shown above. Find it match with the pinout of 555 timer IC. The osciloscope is then connected to the output of 555 timer IC in order to view the square wave. From the....

If the input is coming from, say, a Function Generator`s typical output clipleads, then the "black" lead or "-" or "ground" is connected to the circuit`s ground. From the Pin 3 of a 555 timer. ditto, the timer`s ground must be common with the circuit`s....

The analog input is first fed into a fast non-inverting buffer amplifier (OPA353) set up for unity gain which protects the analog-to-digital converter from out-of-range voltages. The ADS830 is a fairly cheap 8-bit analog-to-digital converter which supports....

This tube tesla coil was built inside a CPU power supply unit. It was first built on a workbench using components and jumpers for connections. The tube used is a 4X150 transmitting tube that used forced air cooling. An old oscilloscope transformer was used....

The frequency is constant varying between two set values, on the oscilloscope screen you get a frequency spectrum with the response curve of the two circuits. The input voltage of the receiver is 0. 1 Volt peak-peak, the voltage across the detector circuit....

To measure the frequency response of the e-meter, a Wein Bridge oscillator, oscilloscope, and single-ended power supply were used. (Ironically, a bridge oscillator is being used to measure a bridge detector. ) The oscillator uses a TL074 quad op-amp,....

1. Spectrum-analyzer project 2007 update Since the development of the wide-band VCO almost 10 years ago, the whole spectrum-analyzer project with all relat....

Set R5 to read 1V RMS on an Audio Millivoltmeter connected to the output with R7 rotated fully clockwise, or to view a sinewave of 2. 828V Peak-to-Peak amplitude on the oscilloscope. An audio amplifier is an electronic amplifier that amplifies low-power....

..

There are a few Instructables and otherwise internet based instructions on how to modify a television set into an audio visualizer or other simple....

Function Generator Virtual Oscilloscope Sound card based multi-functional design, and virtual function generator Microcontroller based Function Generator Design and Implementation of graduation. The total program function generator Generally refers to the....

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...

Once you have built it, Set the frequency as desired using the "Frequency Control". Than using an Oscilloscope you can adjust for best waveform using the "Clip Control". Due to the Sharp Rise and Fall times of Square Waves, they try to make a speaker cone go....

The transmitter circuit uses Microchip`s dsPIC33FJ16GS504 for the analog-to-digital conversion of the input signals on two channels. The processed data on the dsPIC are then transmitted to the phone (for waveform display) via the LMX9838 bluetooth SPP....

..

For the purpose of this project, digital signals can be communicated with computers while analog signals can`t. RS232 is the name given to your serial port. At the back of your computer, there`s many ports where you can plug things into. The RS232 port has 9....

In contrast to an ordinary voltmeter, the input of an oscilloscope generally has one side (GND) connected to ground via the mains lead. In certain situations this can be very problematic. When the measuring probe is connected to a circuit that is also....

..

Since portable PCs are today common and a USB linkis a better solution here we present an oscilloscope using USB port of the PC that operates at upto 10 kHz with ±16V input voltage. Ithas much more improved features thanthe PC-based oscilloscope.The....

For simple electronic circuits, it may be sufficient to get a qualitative insight on dedicated electrical signals. This interface circuitry allows to use the line-in input of a standard PC soundcard to be used as a 2-channel oscilloscope. This setup does not....