Varius Circuits
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A single IC provides all amplifiers: 74HC04 Hex Inverter ( a digital element). The 2nd oscillator synchronizes to 3 times the 1st oscillator and thereforethe FM deviation is tripled. Using the lower freq f1 oscillator also enhancesfrequency stability. .. -
High frequency waveform generator is very useful in electronic experiment and design. This circuit generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. The frequency can be controlled using.... -
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. a 32. 768 KHz square wave from a common watch crystal. The output can be fed to a 15 stage binary counter to obtain a 1 second.... -
Using ADF4007 high frequency divider PLL synthesizer can be designed a variety of communications applications. It can operate to 7. 5 GHz on the RF side and to 120 MHz at the PFD. It consists of a low noise digital PFD (phase frequency detector), a precision.... -
The multiplication operation that is required to generate a signal of a frequency equal to the difference of the input frequencies, can be implemented in several ways. Actually a multiplied signal generally also appears when two signals are added and.... -
Output frequency or tone of this oscillator circuit varies with the temperature at which the input germanium diode is held. Reverse resistance of D1 varies from 500- © to 10 K ©, when temperature varies between 200C and 800C. (At higher temperature germanium.... -
With the Control "On the PCB", set at these Positions* CX = CW Center CCW 100 pf = 6, 400 hz 12, 050 hz 26, 000 hz 470 pf = 1, 525 hz 3, 200 hz 7, 232 hz. 001 uf = 681 hz 1, 425 hz 3, 250 hz. 0022 uf = 348 hz 619 hz 1, 540 hz. 01 uf = 69 hz 146 hz 340 hz..... -
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.... -
A Wien bridge oscillator produces sine waves with very low distortion level. The Wien bridge oscillator produces zero phase shift at only one frequency (f = 1/2 P RC) which will be the oscillation frequency. Stable oscillation can occur only if the loop gain.... -
A discrete oscillator circuit shown in the schematic diagram below is? a variable duty cycle and variable frequency oscillator, can be used to produce... -
A Wien-Bridge oscillator circuit can be built from HA2541 and some basic components. This circuit can generate good-quality sine wave of 40 MHz with an upper limit of 50 MHz. The R3 through R7 and D2 and D1 provide the diode limiting for this circuit. Here.... -
The circuit was designed to create an electronic oscillator known as Wien Bridge Oscillator which can be used for the creation of low frequency sine wave... -
Nowadays, it is no longer necessary to use discrete components to build oscillators. Instead, many manufacturers provide ready-made voltage-controlled osci... -
This is a 100MHz Varicap Oscillator circuit. This circuit can provide modulation signals less than 28V and frequency deviation of 28 MHz peak-to-peak. This ... -
The Vc1 increases linearly when the pull-up resistor RA in the monostable circuit is replaced with constant current source, generating a linear ramp. The linear ramp generating circuit and the generated linear ramp waveforms illustration is shown in figures.... -
A square wave oscillator using 555 IC can be configured to give symmetric oscillation (50% duty cycle). Other circuit uses diodes to split the charging and the... -
This is a circuit of 90-125 MHz Crystal which is very useful for VHF/UHF converters. This circuit provide 5 to 15 mW output. High-quality fifth- or seventh-over-tone crystal type can be used in this circuit. Undesired oscillation never reach above 500 MHz.... -
One of the simplest method of metal detecting is by beat frequency oscillator. Basically, the circuit consist of two balanced oscillator. One oscillator provides the reference signal, and other oscillator is acting as the detector element. The reference.... -
Here we have an astable oscillator built around 555, which gives an alarm tone of 1. 8 KHz directly driving a speaker. This is basic alarm circuit, which is later used in many other projects in the book. While the circuit shows only 1. 8 KHz operation, it.... -
You can experiment with the size of the coul and the number of turns to see how it affects the frequency and signal output of the oscillator. You should be able to pick up its signal with standar FM radio receiver. The Signal In should be coupled by disc.... -
Bubba oscillator is another example of phase shift oscillator. The Bubba oscillator takes the advantage of quad op-amp package to get 45 degree phase shift for... -
The frequency formula of 555 oscillator is popularly known. For a known resistors and capacitor, the frequency can be determined by a formula. From the math... -
This is a 2 MHz crystal circuit using CMOS pair. This circuit is ideal for uses in digital watches and clock because this circuit has low power drain. The oscillator in this circuit is built by connecting the One CMOS transistor pair from CA3600E array with.... -
74HCU04 is a chip that was made for this purpose, HCT may not work for such a circuit. C1 and C2 can go to upto 33pF and R2 can be increased to make R2 * C2 = t. The circuit above is a parallel resonant oscillator circuit. The Crystal works by the.... -
Crystal oscillator circuitis a simple oscillator circuit when we look at the schematic diagram. A crystal oscillator circuit is nothing but a replacement of an ordinary oscillator network, which is a combination of LC. This simplicity is also reflected in.... -
This is an astable multivibrator? (oscillator) circuit using CMOS inverter. This circuit uses CD4007 or MC14007. This circuit has operating frequency range of ... -
What follows below is the schematic of Flashlight Finder circuit diagram using the LM3909, a monolithic oscillator designed to flash Light Emitting Diodes (LEDs).. -
This is a grid dip oscillator (GDO) circuit developed by Luigi Falcone. This circuit uses seven plug in coils covering 3. 0 to 30Mhz. This circuit can be connected to the a frequency meter by using The coaxial socket J2. The figure below shows the schematic.... -
Op-amps has been widely used in low frequency oscillator (frequency ... -
Function generator ranging from 0.1 Hz to 20 MHz can be easily built using MAX038 integrated circuit chip. Here is the most simple implementation of high ... -
This is a simple sawtooth generator circuit. The advantages of this circuit are low cost and produces an auxiliary square wave at the same frequency. This circuit can be used to sweep the frequency of another generator. Here is the circuit : A....
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
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.... -
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.... -
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.... -
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.... -
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,.... -
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.... -
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.... -
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.....
Popular Circuits
The supply voltage should be about +/- 35 Volts at full load, which will let this little guy...
Rl and R2 hold the inverting input at half supply voltage. R4 applies feedback to increase the...
It`s a quick hack on veroboard rather than a neat PCB, but here`s the schematic. Three outputs...
The schematic below showsthe ICL7135 integrating analog to digital converter (ADC) functional...
This be delay timer circuit model to be simple. It be the character delays to close electric all...
This is a very useful RF attenuator circuit which works from 300KHz to the 3GHz range based on...
This circuit is used J-FET for recieve signal to buffer from LED, About Output voltage, We used...