- Joined Sep 28, 2021
Hi readers ,
Vin is fed with the PWM signal coming from an op-amp to be amplified and fed into the load R1 (1 Ohms). The purpose I design this is I want the voltage source to be a constant 5V which is independent of the load (1 Ohms or 100 Ohms). So basically, this circuit has an op-amp which acts as a PWM controller. When voltage is high across R1 (lets say 8V) , the OP07 output duty cycle would decrease which means PWM decrease, this helps to lower the voltage of R1 back to its original voltage (5V). However, this circuit doesn't really seem to work.
Question: How to maintain constant voltage across R1 Load that is independent of the ohmic value of the load?
Thank you for reading
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