NE555 adjustable pulse generator
NE555 adjustable pulse generator is based on NE555 chip, built into an oscillator circuit.
After the Uc charge to 2/3 or more VDD, oscillator output Vo flip to 0, the discharge tube conduction, make the discharge end (DIS) grounding, capacitance C through R2 to discharge, bring down the Uc.
When reduced to a third or less VDD Uc, oscillator output Vo and flip into 1, discharge tube and as of right now, make the discharge end (DIS) not grounding, power VDD through R1 and R2 and recharging the capacitance C, made up from a third VDD Uc two-thirds VDD, trigger and flip, so the cycle, so as to get continuous variation on the output side Vo oscillation pulse waveform.
Pulse width 0.7 R2C TL material, determined by the capacitance C discharge time;TH = 0.7 (R1 + R2) C, is determined by capacitance C charging time, pulse period T material TH + TL
2. Directions for use
The amplitude in: 4.2 V to 11.4 V
3. Functions and Diagram
List of components:
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