The value of CT in the selection of the electronic switch circuit IC2 number 4066.Electronic switch with 4 built-in IC 2.Basic using it need the voltage supply 5V to 15V, Maximum supply voltage 16v 18v, Current consumption about 10mA, Maximum Output Current is 200mA.We can use them in three different types of oscillators: (1)Astable Multivibrator oscillator If frequencies more than 1 cycle per second, it is an oscillator (pulse generator or square wave oscillator).
![]() Monostable (ONE SHOT) changes state only once per trigger pulse (3) Voltage Controlled Oscillator (VCO) Now we will learn about pulse generator with IC-555 below basic circuit. 555 Timer Circuit Schematic Generator Pulse GeneratorTable of Contents Simple 555 timer astable oscillator circuit Parts you will need High Power 555 Pulse Generator Pulse generator control frequency using digital IC The danger beep circuit using IC-555 Tone Burst Generator using LM555 Annoying high pitch noise generator using IC-555 Related Posts GET UPDATE VIA EMAIL Simple 555 timer astable oscillator circuit In the circuit above. First of all the current from the power supply flow to the capacitor-C1 charges via the Resistor-R1 and R2, then the voltage in the capacitor reaches 23 of the supply voltage, pin 6 detects this voltage, cause pin 7 cut off this voltage to Ground(0v). Thus the capacitor-C1 discharges through the resistor-R2 until its voltage is 13 of the supply and pin 2 detects this voltage and pin 7 not connect (turns off). ![]() The top resistor prevent pin 7 may damage as it shorts to 0v when pin 6 detects 23 supply voltage. Its resistance is smaller than R2 and does not come into the timing of the oscillator. The output frequency will be approximately 1kHz and the duty cycle 50-50, The Frequency output (F) 1(R12R2)C1. The values units in the formula in ohms, farads, seconds and hertz. This formula is much simpler than that of the previous circuit. Suppose R1 1k, R2 10k and C 0.1uF The result is approx 900Hz Parts you will need R1: 100K 14W Resistors tolerance: 5 VR1: 1M Potmeter C1,C2: 0.01uF 50V Ceramic Capacitors IC1: NE555 Timer We use simple 555 pulse generator idea to builds many circuits for example below High Power 555 Pulse Generator If you are looking for a pulse oscillator in high current. This is a high power pulse generator circuit that you may like it. Which the main component is IC-555 timer as the oscillator, and the LM350T provides a high current up to 3A max. In the first time, we think to use the power transistor-2N3055 (popular coponent in all time) to increase current up. It is DC regulator at 3A current, so higher performance than 2N3055 exactly. ![]() Which we can adjust the frequency output with rotate a VR1-100K. Then, the signal comes out of the output pin go to the pre-driver, transistor-2N2222. While there is the high voltage comes out of the output, in high current pulse about 3A. Thus, friends change the value of R5 for controlling the level voltage output in minimum 1.25V to high voltage at around 15V. Because of this circuit uses input (voltage of power supply about 5V 15V) The other ideas, if you want the current just only 1A output. Pulse generator control frequency using digital IC This circuit make pulse signal in continuity.
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