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Popular Crystal Oscillator Circuits

UJT relaxation oscillator, circuit diagram, UJT theory and working
UJT relaxation oscillator. UJT relaxation oscillator is a type of RC ( resistor-capacitor) oscillator where the active element is a UJT (uni-junction transistor). UJT is an excellent switch with switching times in the order of nano seconds. It has a negative resistance region in the characteristics and can be easily employed in relaxation oscillators.
LDR Circuit Diagram - Build Electronic Circuits
Nov 01, 2013How The LDR Circuit Diagram Works. The LDR circuit diagram works like this: When it’s dark, the LDR has high resistance. This makes the voltage at the base of the transistor too low to turn the transistor ON. Therefore, no current
What is a Phototransistor : Circuit Diagram & Its Working
Phototransistor Circuit Diagram. In the simple circuit, assuming that nothing is connected to Vout, the base current controlled by the amount of light will determine the collector current, which is the current going through the resistor. Therefore, the voltage at Vout will move high and low based on the amount of light.
Smps Circuit Diagram Power Supply
May 02, 2016Circuit Diagram Of Smps Power Supply DC-DC. The output of the smps is regulated by means of PWM (Pulse-Width-Modulation). As given in the circuit above, the switch can be driven by the PWM-oscillator, such that the power delivered to the step-down transformer is controlled indirectly, & hence, the output is controlled by the pulse-width-modulation, as this
Transistor as an Amplifier – Circuit Diagram, and Its Working
A transistor is a three terminal semiconductor device, and the terminals are E(Emitter), B (Base) & C (Collector) transistor can work in three different regions like active region, cutoff region & saturation region. Transistors are turned off while working in the cut-off region and turned on while working in the saturation region. Transistors work as an amplifier while they work in the
555 Timer Astable Multivibrator Circuit Diagram
Sep 29, 2015In this 555 astable multivibrator circuit, LED will switch ON and OFF automatically with a particular duration. ON time, OFF time, Frequency etc can be calculated using above formulas. Above figure shows the 555 timer astable multivibrator circuit diagram. You can find a lot of circuits and applications using astable mode in 555 timer circuits.
100+ Power supply circuit diagram with PCB - ElecCircuit
Jul 04, 2022Other Linear Power supply Circuit Diagram Fixed Volts regulator: 12V 1A linear regulator using transistor and Zener diode; 1, 3V, 4, 6V, 9V at 1 Selector Voltage regulator; 12V and 5V output Many ideas of 12V and 5V Dual Power SupplyCircuit Diagram at 3A max; Low volts: 1, 3V. USB 5V to 1 /3V DC Adapter ( Converts USB to 1 or
Wireless Mobile Charger Circuit Diagram - Engineering Projects
Apr 15, 2017The tuned collector oscillator uses a parallel L-C circuit in the collector circuit as the load and this circuit determines the frequency of oscillation. The output voltage developed across the tuned circuit is inductively coupled to the base circuit. is connected to the base of the general-purpose transistor T 1 which is used to drive the
Build Simple Transistor Circuits - Homemade Circuit Projects
Apr 26, 2022This small experimental two transistor oscillator circuit can easily create audible frequencies within the range between 100 Hz and 2 kHz, operating a little loudspeaker. The transistorized noise limiter circuit depicted in the diagram below can be used to solve this problem. Using potentiometer R3, both the signal and the noise are sent to
Switching Power Supply Circuit Diagram with Explanation
Jul 13, 2019Figure 2. Block Diagram of Switching Power Supply Circuit . Ⅳ Principle of Input Circuit and Common Circuit 4.1 Principle of AC Input Rectification and Filtering Circuit. Figure 3. Schematic of Input Filter, Rectifier Circuit. ① Lightning Protection Circuit: When there is a lightning strike, high voltage is generated through the power grid.
Phase Shift Oscillator Practical Project Build Your Own Metal Detector with an Arduino Homemade metal detector circuit

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