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if u make com 0 u make non inverting terminal high so at output u get a 1. so when s=1 output qbar is 0 and s=0 output qbar =1 leaving at 50% duty cycle so no pwm ........................
In an open loop design the output is not maintained constant as we dont check on its parameters like output current or voltage ......... but in a closed loop the output can be kept constant by increasing or decreasing the swithching freq. duty cycle. to maintain constant output.........
Post your problem clearly Bcoz if u assemble a *.asm file u should get a hex file as output. Check whether you have installed an assembler and linked it to the ide ................. post what msg u get on unsuccessful process
if its for 100watt then 1volt should output a 100amps current and 80v should give 1.25amps by P=V*I so the ouput current must be min 1.25 to max 100amps.....
you have to design for transformer for 100W and reduce input current with duty cycle,
such that u change the input power.
P=1/2*L*I^2*f...
hi im using uc3844 i am getting pulse at rtct but not at the output pin ... i dont know why........ i have attached the circuit
i have given a power supply of 16volt ...... also i see a 5 volt at reference pin ...i use a ct 1nf and rt 14.2k and get a 110k pulse at rtct pin........
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