Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
Liquid Sensing Circuits
Light Sensing Circuits
Voltage Detector Circuits
Air-Gas Detection Circuits
Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
Digital to Analog
Analog to Digital
Data Bus Circuits
Voltage to Pulse
Current to Voltage
Frequency to Voltage
RF Converter Circuits
Sine to Square Wave
Voltage to Current
voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Sine Wave Oscillator Circuits
Sine Wave Oscillator Circuits
Frequency Sine wave generator with MAX083
This circuit uses the versatile MAX038 function generator. Although in this circuit some of the advanced characteristics of this IC are disabled, you can generate Sine, Triangle, Square waves (adjusting A0 and A1 pins see datasheet on www.maxim-ic.com if you want other waves, use a switch). The signal is amplified through a TCA0372 (from ONSEMI)...
Digital Sine Wave Oscillator
If found myself in need of a 1 KHz signal source for an experiments. My function/sweep generator was needed as a pulse generator for the same experiment, so I went though my junk box, looking for circuits from long ago that might fill the need, but found nothing useful. I had a board with an AT90S8515 and an 8 bit resistor ladder network on it,...
Function Generator Sine / Triangle / Square / Saw ( PIC16F870 )
After the recent demise of our multifunction signal generator, we decided to make one of our own. The circuit uses a PIC16F870 (about $3), an R/2R resistor ladder network (for a real fast and cheap D/A), and a few other parts. You can check out the schematic and the current source file. Also the object (hex) file. All of the sine wave...
Function Generator, capacitance and inductance meter
This site contains complete schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output. Project specifications are given below.
Tunnel Diode Oscillator
The excess small forward current flow in a tunnel or Esaki diode is a manifestation of quantum mechanical tunneling.
Function Oscillator using 8083
Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges. There are both high and low level outputs which may be adjusted with the level control. This project makes a useful addition to any hobbyists workbench as well. The waveform generation is produced by...
Magic Sinewave Analysis using SPICE and a Simple Inverter Circuit
Magic Sinewave Analysis using SPICE and a Simple Inverter Circuit.
Pure Sine Wave Inverter Schematic Diagram Datasheet Circuit Pdf
Sine Wave Inverter
Simple Adjustable Sine/Square Wave Oscillator Circuit schematic with explanation
This circuit provides sine and square wave at frequency of below 20Hz up to above 20KHz. The benefit of this circuit diagram is that you can adjust the output frequency by varry the variable resistor of R6.
1KHZ Sine Wave Generator Circuit
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 audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range
A Simple Sine Wave Oscillator
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 from a full out position to a full in position. These continuous sudden changes in the spe
1 Hz Sine wave generator
wien bridge sine wave oscillator circuit using lm107
This circuit is that the traditional tungsten filament lamp amplitude regulator is eliminated along with its time constant and linearity problems. In addition, the reliability problems associated with a lamp are eliminated. The Wien Bridge oscillator is widely used and takes advantage of the fact that the phase of the voltage across the parallel b
1 KHz Sine Wave Generator Circuit
This is a design circuit for generates a good 1 KHz sine wave adopting the inverted Wien bridge configuration (C1-R3 & C2-R4). It features a variable output, low distortion and low output impedance in order to obtain good overload capability. The figure is shown in below. The bulb must be a low current type (12V 40-50mA or 6V 50mA) in order to obt
LT1007/LT1037 Ultrapure 1kHz Sine Wave Generator
A lamp provides amplitude stability while the very low noise amplifier creates a pure sine wave signal. The R an C values set the oscillator frequency and the feedback resistor sets the lamp current and output amplitude.
ULTRA PURE 125KHz SINE WAVE SIGNAL SOURCE
ULTRA PURE 125KHz SINE WAVE SIGNAL SOURCE . For some RFID systems, which is at 125KHz, a very low distortion signal source is required. The circuit on this page results in a 10-volt peak-peak signal into.
sine to square triangle wave
If you need a triangle wave signal or a square one but you only have a sinewave generator, use this converter to avoid the trouble of beginning from scratch. It is made up of two ICs: one LM13700 and one TL084. The amplitude of the squarewave can be varied through P1 while potentiometer P2 varies the amplitude of the trianglewave signal. The conve
convert square wave inverters to sine wave inverter
There`s pretty easy to make squarewave inverters` circuits in the internet. But to run most load like fan, TV, etc you need to have a sinewave inverter. Making sinewave or near-sinewave inverter is more complex and costly. But we can also convert squarewave inverters to sinewave inverters. A LRC resonant circuit is needed for this. The values dete
simplest modified sinewave inverter without microcontroller
Most of the inverters in the market uses modified sinewave for better output at competitive cost. The modified sinewave unit uses a 50% fixed PWM squarewave and the hikes are balanced by a capacitor to produce almost a sine wave. This is called quasi sinewave having THD around 25-28% while squarewave inverters have 45% THD and pure sinewave invert
1KHz Sinewave Generator
This circuit generates a good 1KHz sinewave using the inverted Wien bridge configuration (C1-R3 & C2-R4). Features a variable output, low distortion and low output impedance in order to obtain good overload capability. A small filament lamp ensures a stable long term output amplitude waveform. Useful to test the Audio Millivoltmeter, Audio Power M
Switching (transformerless) DC/AC 12V/230V 150W modified sine wave inverter
The inverter is suitable for battery powering of mains appliances. It is a switching converter, which contains no bulky, heavy and expensive iron transformer. The advantage of small size and weight, precise output voltage stabilization and among other things, very little quiescent power consumption, which can not be achieved using th
Low Frequency Sine wave Generators Schematic
The two circuits below illustrate generating low frequency sine waves by shifting the phase of the signal through an RC network so that oscillation occurs where the total phase shift is 360 degrees. The transistor circuit on the right produces a reasonable sine wave at the collector of the 3904 which is buffered by the JFET to yield a low impedanc
Make This 1KVA (1000 watts) Pure Sine Wave Inverter Circuit
As can be seen in the first diagram below, the configuration is a simple mosfet based designed for amplifying current at +/-60 volts such that the connected transformer corresponds to generate the required 1kva output. Q1, Q2 forms the initial differential amplifier stage which appropriately raises the 1vpp sine signal at its input to a level whic
10-100kHz sine-wave oscillator
Generating a simple sine wave
I needed a sine wave carrier for a magnetic transponder system I am working on. Various types of crystal based oscillator are available such as the Pierce, but these can be tricky to design and ensure they work correctly. Rich suggested using a square wave oscillator with a filter to turn it into a sine wave. The filter attenuates all frequencies
SINE WAVE OSCILLATOR
Rf = 100 k preset - The slider is set about a quarter of the way round. This is used to control the gain. The gain should be as small as possible consistent with the oscillator starting up reliably. The zener diodes limit the oscillator output by decreasing the amplifier gain if the output rises above their breakdown voltage. They also decrease th
the photovoltaic sine wave inverter introduction to 68HC908MR16 one-chip computer
With the aggravation and improvement of human environmental consciousness day by day of the energy crisis, the development and utilization of new energy is paid attention to more and more by people. And the solar energy has been favored by people recently as the inexhaustible high-efficient and pollution-free energy. The photovoltaic sine inverse
The single-phase sine wave frequency conversion stabilized voltage supply is designed and made
When the input voltage is 198- 242V, the mean value of the load current is 0. 5- 1A, the mean value of the output voltage should keep in 15V, the error is smaller than 5% : 1 When the input voltage is 198- 242V, the mean value of the load current is 0. 5- 1A, the mean value of the output voltage should keep in 15V, the error is smaller than 1%; 2
Choosing a simple audio frequency sine wave generator
sine wave generator circuit
This is a circuit for generating a sine wave from a single operational amplifier. The feedback loop of the op amp in this circuit (741) consists of a twin-T filter connected between its output and its inverting input. Positive feedback for oscillation is provided by R2. The twin-T filter (see Figure 2) is a passive notch filter composed of two T-n
Servo Circuit Controls Sine-Wave Amplitude
The figure shows a schematic for an oscillator amplitude-control servo system. The circuit creates a closed-loop system that supplies a fixed and adjustable peak-to-peak amplitude ac signal centered around 0 V. A 1-kHz sine wave, labeled AC_INPUT, is ac-coupled to an AD633 multiplier chip. Then the AC_INPUT is multiplied by the SERVO signal. The m
Astable Oscillator Circuits
Colpitts Oscillator Circuits
Crystal Oscillator Circuits
Hartley Oscillator Circuits
RF Oscillator Circuits
Square Wave Oscillator Circuits
Volt Controlled Oscillator Circuits
Wein Bridge Oscillator Circuits
Pierce Oscillator Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity