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
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
555 Timer Oscillator
As discussed in previous blog posts, pin 5 terminal is voltage control terminal and its function is to control the threshold and trigger levels. Normally, the control voltage is +2/3VCC because of the internal voltage divider. However, an external voltage can be applied to thisterminal directly or through a pot, as illustrated in figure, and by a
Audio oscillator circuit based on ICL8038
ICL8038 based audio oscillator circuit. Simultaneous sine, triangle and square wave forms. Dual supply operation. Cover full audio frequency range..
So far, we have considered the oscillators which use L-C tuned circuit that causes a phase shift of 180 ° due to inductive or capacitive coupling in addition to a 180 ° phase shift produced by the transistor itself. The oscillators employing L-C elements, called the L-C oscillators, are very popular for generating high frequency oscillations but t
Colpitts oscillator using transistor. Circuit diagram and theory
Colpitts oscillator circuit diagram and theory. Colpitts oscillator frequency equation. Colpitts oscillator using transistor. Colpitts oscillator using opamp..
In crystal oscillators, the usual electrical resonant circuit is replaced by a mechanically vi brating crystal. The crystal (usually quartz) has a high degree of stability in holding con stant at whatever frequency the crystal is originally cut to operate. The crystal oscillators are, therefore, used whenever great stability is needed, for examp
CW Practice oscillator
A circuit diagram that can be used for the generation of CW Morse code is shown here. This circuit can be very useful those who would like practice Ham Radio. The circuit is nothing but an astable multivibrator based on NE 555. The frequency of oscillations of the circuit depends on the components R1, R2 & C1. The circuit can be powered from a...
Negative Resistance Oscillators-WorkingTypesCircuitsCharacteristics
The working of Negative Resistance Oscillators,Types like Dynatron,Tunnel diode oscillator, their characteristics and circuit diagram is explained..
Oscillator operation-working-feedback circuit block diagram
A feedback amplifier having closed-loop gain, Af greater than unity can be obtained by the use of a positive feedback. This result also satisfies the phase condition and thus results in the operation of an oscillator circuit. An oscillator circuit then provides a constantly varying output signal. If the out put signal varies sinusoidally, the cir
Phase Shift Oscillator
We select the so called phase shift oscillator as a first example as it exemplifies verysimply the principles set forth in the previous blog post. The circuit is drawn to show clearly the amplifier and feedback network. The circuit consists of a common source FET amplifier followed by a three section R-C phase shift network. The amplifier stage i
Transistor phase shift oscillator. RC phase shift network and RC phase shift oscillator using opap
Transistor RC phase shift oscillator . RC phase shift oscillator using opamp. RC phase shift network. Theory and working principle. circuit diagram..
Variable Frequency Oscillator Circuit with Schematic
A NE555 IC is used for designing the variable low frequency oscillator and schematic is also given..
Voltage Controlled Oscillator
Voltage controlled oscillator is a type of oscillator where the frequency of the output oscillations can be varied by varying the amplitude of an input voltage signal. Voltage controlled oscillators are commonly used in frequency (FM), pulse (PM) modulators and phase locked loops (PLL). Another application of the voltage controlled oscillator is th
Wien Bridge Oscillator
It is one of the most popular type of oscillators used in audio and sub-audio frequency ranges (20 20 kHz). This type of oscillator is simple in design, compact in size, and remarkably stable in its frequency output. Furthermore, its output is relatively free from distortion and its fre quency can be varied easily. However, the maximum freque
A High Power Planar Triode Oscillator Designed by Using FEM Modeling
COMSOL, adding SPICE® elements into its FEM, gives the possibility of a direct modeling of oscillators: triode and load are FEM described while all the other components of the circuit are just simulated using SPICE ®. The modeling is not a straight application of any module but needs the previous computation of the conductivity of the beam throug
LC feedback Oscillator
These are resonant circuit or tank circuit oscillators. They are commonly use to produced high frequencies as ranging from I MHz to 500 MHz Hence they are also known as RF oscillators. These oscillators are used in RF generators, radio transmitters and receivers. Some popular IC feedback oscillators are of the following types. Hartley oscillator i
RC feedback oscillators
RC oscillators employ resistors and capacitors and are used to generate low or audio-frequency signals. Hence they are also known as audio-frequency (A.F) oscillators..
VHF/UHF Mixer Local Oscillator
CF5019 High-Frequency 3rd Overtone Crystal Oscillator Module ICs
The CAMD CM8870 CM8870C provides full DTMF receiver capability by integrating both the band-split Filter and digital decoder functions into a single 18-pin DIP, SOIC, or 20-pin PLCC package. The CM8870 70C is manufac- tured using state-of-the-art CMOS process technology for low power consumption (35mW, MAX) and precise data handling. The Filter se
Design Of Op Amp Sine Wave Oscillators
The HV732 is a complete, high-speed, high voltage ultra- sound transmitter pulser. This high performance CMOS in- tegrated circuit (IC) is in a single 7x7x0. 9mm 44-lead, multi- die, QFN package. The HV732 CAN deliver up to a ±2A source and sink cur- rent to the load transducer. It is designed to be used as a transmitter pulser in medical ultrasou
The MS6712 is a 4 stereo inputs/4-channel outputs digital control Audio Processor for the low voltage operation. Volume, Tone (bass and treble), balance (left/right), and fader (front/rear) processor are incorporated into a single chip. The MS6712 also has the loudness function and selectable input gain. These functions CAN be built a Hi-Fi Audio
Mcu Reset And Oscillator Circuits Applicationnote
Introduction The MIC2290 is an internally compensated standard step- up Switching Regulator with an integrated power Switch and Schottky Diode The attribute of an internal power Switch and Schottky Diode makes the MIC2290 the most optimized solution for 48V Avalanche Photo Diode (APD) applications. In addition to the critical integrated components
Microcontroller Oscillator Circuit Design Considerations
OCXOW-AR1 OCXOW Oven Controlled Crystal Oscillator
The OPB350 series liquid Sensor is designed to work with 1/16 [1. 6mm] 1/8 [3. 2mm], 3/16 [4. 8 mm] and 1/4 [6. 3 mm] outside diameter clear tubes. When output reference circuitry is added, multiple output states such as fluid present, no fluid present and no tube present CAN be recognized. Clear liquid present causes the Phototransistor to sink...
R1210 CRYSTAL OSCILLATORS
The RF2516 is a monolithic integrated circuit intended for use as a low-cost AM/ASK transmitter. The device is pro- vided in a 16-pin QSOP-16 package and is designed to provide a phased locked frequency source for use in local Oscillator or transmitter applications. By RF Micro Devices
SM5023 Crystal Oscillator Module IC
SEL2411AA is a sub package of SEL2410, If you need see the description, please click SEL2410. If you need SEL2411AA`s datasheet, please download it from below. By Pericom Semiconductor Corporation
SEL2411AA Crystal Clock Oscillator 3.3 & 5V High Frequency ECL
SI2171 is a sub package of SI2170, If you need see the description, please click SI2170. If you need SI2171`s datasheet, please download it from below. By Silicon Laboratories
SM5021 Crystal Oscillator Module IC
The CF8223A is a FSK (Frequency shift keying) decoder and DTMF (Dual Tone multi-frequency) receiver IC. It is fabricated using a CMOS process and features a power-down function for low power dissipation opera- tion. The FSK decoder and DTMF receiver have the same performance characteristics as dedicated ICs that perform the same functions, with th
TA1284FN UHF / VHF TUNER IC (Low Phase Noise Oscillator)
TA1317ANG is a deflection processor IC for a large and wide picture tube. TA1317ANG incorporates an EW, a vertical distortion correction circuit and a dynamic focus correction circuit. It CAN 2 control various functions via I C BUS line. By Toshiba Semiconductor
TUA6020 Stationary - MOPLL & Silicon Tuner 2 Band TV Tuner Mixer-Oscillator-PLL With Balanced IF-Amplifier
Ultra Low Voltage Micropower Crystal Oscillator Circuit
Ultra Low Voltage Nanopower Lc (colpitts) Oscillator Circuit
Low Frequency Oscillator
A low frequency test oscillator for testing tone controls and experimenting..
Astable Oscillator Circuits
Colpitts Oscillator Circuits
Crystal Oscillator Circuits
Hartley Oscillator Circuits
RF Oscillator Circuits
Sine Wave 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...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial