PLL Circuits
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NJM2268 is a dual Video 6dB Amplifier with 75 drivers for S-VHS VCRsHI-BAND VCRsetc. One channel has clamp function that fixes DC level of Video signal and another one is bias type. Furthermore it has 75 drivers to be connected to TV monitors directly and.... -
This application report presents one possible solution to the telecom plug-in power problem, based on a nominal 48 Vdc system bus and a module needing two low-voltage supply outputs. The material includes a detailed design methodology for tailoring the.... -
The SC9270C/ SC9270D is a complete DTMF receiver integrating both the bandsplit Filter and digital decoder functions. The Filter section uses switched capacitor techniques for high- and low-group Filters and dial-tone rejection. Digital counting techniques.... -
The TEA1069 and TEA1069A contain all the functions needed to build a highly featured, high-performance fully electronic telephone set. The device incorporates a speech/transmission part, a dialler part and a ringer part. By offering a wide range of possible.... -
Hello friends I have a problem in a PLL. I have used a loop filter as shown in this figure: But the output spectrum is as shown in this figure: What`s .... -
The IC is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing. A special function is implemented for the demodulation of FM radio signals.... -
The PLL transmitter exciter has the functions of providing a stable, low noise, frequency-selectable RF signal and amplify it to a controllable output power sufficient to drive the power amplifier. It uses a PLL frequency synthesizer built with MC145151,.... -
Clip sync output to TTL level seems to take some more time to fit the extra parts on the board; as a quick fix, put a ZPD4. 7 (4. 7 V Z-Diode) between SGand ground at the POWERswitch (ring to SG) and a 1k resistor between the SGoutput from the BOTPCBand the.... -
This is schematic of a synthesized PLL for the Low Power FM transmitter. By the way, you also can use it with other circuits, just pay attention to recalculate the loop filter response and components, VCO tank circuit, and the correct thumbswitch programming.... -
To change the frequency of the output by the dividing ratio of the comparison frequency in the 10KHz unit, the dividing ratio is fixing on 1024 at the circuit this time. Because the 144-MHz bandwidth of the amateur radio is 2MHz(144. 0MHz to 146. 0MHz) in.... -
The Motorola MC145158 is a dual-modulus, serial-input PLL frequency synthesizer which is commonly used in older Motorola cellular phones. Refer to the MC145158's datasheet for the nitty-gritty technical details. The MC145158 is no longer manufactured, but.... -
The goal was to convert this radio for operation on the 70cm amateur radio band. This was unsuccessful as the VCO will not oscillate at the right frequencies for 70cm operation (the VCO control voltage bottoms out before the VCO gets anywhere near the 70cm.... -
Using SimPLL`s new PLL Wizard you can design a new PLL with a few clicks of the mouse. We have just designed one that tunes from 150MHz to 170MHz in 25kHz steps using a LMX2306 PLL IC and a MiniCircuits POS300 VCO. and because the LMX2306 and MiniCircuits.... -
Complete terminal unit and AFSK tone generator for VHF bands synthesizes tones digitally for 170-Hz narrow shift and 850-Hz standard shift found in VHF amateur RTTY bands. Additional feature is PLL circuit that follows drifting signal and copies signals from.... -
Frequency signal tracking circuit is the phase-locked loop circuit, which is one of the basic application circuit of CD4046. The circuit shown as the chart and composed of CD4046 is a PLL circuit, and it can capture and track the input signal with the input.... -
PLL synthesizer oscillator circuit is a feedback loop composed of reference oscillator, phase comparator, loop filter, voltage controlled oscillator, programmable frequency divider and other components. In the circuit, the reference oscillator uses a crystal.... -
This is a PLL controller that works with the VCO/Modulator that I designed. Use these two modules together for a complete baseband-capable exciter unit. This PLL controller features a rock-stable crystal controlled reference, in conjunction with a.... -
Here`s a PLL FM Transmitter using LMX1601, ATtiny2313 or AT90S2313 microcontrollers. The common characteristic of all of the previous low power FM transmitters I`ve built over the decades, is that their operating frequency is determined by an LC resonant.... -
The circuit shown here is of a good Stereo FM transmitter that can transmit high quality signals up to a range of 70 feet. The circuit is based on BH1417 PLL stereo transmitter IC from Rhom semiconductors. The IC has separate audio processing sections for.... -
The PLL pulse generator is shown as the chart. The circuit is the phase-locked loop (PLL) pulse generator circuit. PLL makes a fractional frequency to crystal oscillator and gets 1kHz stepped frequency signal, moreover, it obtains 10kHz 999kHz pulse waveform.... -
What is a PLL oscillator? PLL stands for phase locked loop, and this means a control method by comparation of the controlled plant or system to a reference....
New Circuits
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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.....
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