Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
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Human Sensing Circuits
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AC to DC & DC to DC
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Data Bus Circuits
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RF Converter Circuits
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Video Wall circuits
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8051 / 8052
PCB CAD Software
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H Bridge Circuit
DIY HV Variable Cap
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Digital Signal Integrity
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4 Band Resistor
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Square Wave Oscillator Circuits
Square Wave Oscillator Circuits
Square Wave Generator (For Resonant Air-Gap Transformer)
I`ve decided on a project for the new year that is ~~less likely to lead to sterilization~~ better than my old project (which was a homebrew x-ray mac..
555 IC Square Wave Oscillator circuit
A form of relaxation oscillator which comprises two stages that are coupled so that the input of one is derived from the output of the other. Basically two amplifiers cross-coupled with regenerative feedback, in it`s most simplistic form. One of the amplifiers is always conducting while the other amplifier is in cut off.In this case both...
Op-Amp Pulse Generator Circuits
A number of operational amplifier circuits are provided here that are set up to be squarewave oscillators. A squarewave is a Periodic Wave pulse train with a 50 percent duty cycle. The operational amplifier is really just a high-gain amplifier, so oscillation is not a problem with just a little positive feedback [R4 provides the positive feedback
HICKOK HTS-81 Sine and Square Wave Audio Signal Generator
low frequency square wave oscillator circuit
Square wave oscillator
By the hysteresis characteristic, the voltage which becomes the H level with the input voltage of the inverter rising from 0 V (Voltage that the output becomes 0 V) and the voltage which becomes the L level, descending from +5 V (Voltage that the output becomes +5 V) are different.
Voltage-controlled dual slope operation square/triangular wave generator
1024kHz and 4kHz square-wave output circuit
The circuit SJT is a 1024kHz warming crystal oscillator. Circuit is shown as the chart. As its output signal level is low, so the following transistor VTl is used as the buffer amplifier. The base bias resistor R2 of VTl, the load resistor R3, the emitter resistor R4 form the negative feedback resistor which is used to stabilize the DC operating...
LC square wave generator
Square-wave generator with LC circuit can get a better frequency stability, it`s as shown in the chart. This three-terminal oscillator of capacitor can be used to generate a square wave, but an operational amplifier is used as the active component..
17Hz three-phase square wave oscillator circuit
Oscillator circuit diagram with triangle-wave/square wave output
The circuit is composed of lag comparator with A1 and inverting integrator A2, and the charging and discharging time constant is decided by integral resistors (R1+RP1) and the capacitor C1. VD1~VD5 form the limiter circuit. The maximum oscillation frequency is related to swicthing rate of amplifier, when swicthing rate is 10V/? s, in order to...
Sine wave-square wave converter circuit
Square wave and triangle wave oscillator(5532)
Three-phase square wave signal oscillator circuit
As shown in Figure 16-4, a CD4017 is connected as senary counter, and the input clock is 300Hz.VD1 ~ VD9, R1 ~ R3 form the three three-input OR gates, which can respectively get two 50Hz three-phase wave signal with 120 degrees phase difference. A, B, C can obtain three -phase signal, and it is shown in Figure 16-5..
Square-wave generator circuit
T1 and T2 in the circuitform theinherent oscillator, T3 is output level. Network consists of high-pass filter (C3, C4, R6 + - R7) and low pass filter, it`s output is added to the T3 base via C6 and R8, and in the collector of T3, it willget required square wave oscillation signal..
Sine to Square Wave Converter
This schematic example (see sine2square. png ) demonstrates a sinusoidal voltage input at a frequency of 10KHz converted to a square wave through an inverter-based circuit. VDD and VSS rails are ties to +1V and =1V, respectively. The control file ( sine2square. ctr ) contains model statements for the diodes and the MOS devices used by the...
Self Powered Sine Wave to Square Converter
Only with a single chip active component (4069 IC), this circuit will convert sine to square waves without a power-source. To test some audio instruments, we..
555 IC for Square Wave Tone Burst Generator
Square wave tone bursts is provided by depressing the pushbutton. It`s duration depends on the duration for which the voltage at Pin 4 exceeds a threshold..
Square Wave Oscillator using Comparator/Op-Amp
The circuit shown in this schematic diagram is a square-wave oscillator circuit. The main component of this oscillator circuit is LP165/365 comparator. As..
Square Wave Oscillator
It`s most useful application is as a Signal Injector for radios and TV`s. A square wave is the most suitable for testing the IF (Intermediate Frequency) strip as the signal will pass through the IF transformers without any attenuation, no matter what the tuned frequency of the circuit. Normally only a sine wave of the correct frequency will get...
SINE WAVE TO SQUARE WAVE CONVERTER
The sine input is ac coupled by capacitor C; R1 and R2 bias the input midway between Vn and Vp, the input threshold voltages, to provide a square wave at the output.
SINE WAVE TO SQUARE WAVE CONVERTER
This circuit tums a sine wave into a square wave. It is comprised of a single 2-input NAND Schmitt trigger that`s conftgured as an inverter with a trigger level adjustment at its input. As the input voltage rises above the gate`s trigger point, the output snaps to its alternate state, producing a square-wave output.
Small Footprint Square Wave Oscillator
This is a small footprint 50% duty cycle square wave oscillator with variable frequency from 10kHz to 30MHz. The frequency range can be extended to 1kHz by using 1M instead of 100k for R6. The sheet presented here drives the square wave directly into 50Ohm; the output stage uses 5 parallel 74AC04 CMOS in
Simple square wave generator
Typically square wave generators are based on symmetrical multivibrator with bipolar transistors of the same structure and with two frequency determining network. However, you can construct more simple oscillator with two transistors of different structure (see figure 1) with only one frequency determining network. The circuit works this way: when
Astable Oscillator Circuits
Colpitts Oscillator Circuits
Crystal Oscillator Circuits
Hartley Oscillator Circuits
RF Oscillator Circuits
Sine 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