Easy to adjust high-precision PWM pulse width modulation 12-bit DA converter


Posted on Nov 10, 2015

4096 times the input frequency PWM clock signal, counts up (Q three ), until the base is full ICi-IC3 (sweet day), the output point d a MAX clock signal, which on the one hand


Easy to adjust high-precision PWM pulse width modulation 12-bit DA converter
Click here to download the full size of the above Circuit.

the voltage data loaded into IClr rIC3, leaving the other dare steady Ics flip, Q ugly, namely, the number is in the state count down, and then began to count down until the point a fork outputs a MIN the clock signal period, the signal voltage on the one hand the data reloaded ICi ~ ICz, on the one hand to the bistable flip IC5 original state, and counts up, and thereafter repeat the above process. voltage data values and subtraction of the pulse count port number is the same liquid on PWM demodulation, the smoothing filter Ri, Rz and cl, C2 turn into a DC voltage, high input impedance amplifier OP is also magnified by 2 times and then converted into o ~ + iov voltage.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Rotating Message board using PIC12F629
Headphone electrostatic JFET Amplifier
Fantastic Simulated Laser Circuit
F232 is USB powered
Mini Voice Operated Relay circuit diagram
IC Controlled Emergency Light with Charger Circuit Schematic Free With Explanation
Soft Circuit Singing Pig with Wigs Part 2 Circuit
voltage to frequency converter
hv generator circuit
POWER FREQUENCY CONVERSION CONSIDERATIONS



Top