I'm designing a PIC based timer circuit.Attached diagram is the circuit. 10K resister is the Preset value for analog input of the PIC micro.For the outputs I have only a MOC3042 (10mA) driven triac.
The problem is due to voltage drop of the bridge rectifier, the output voltage is limited to 4.5V. Which is affecting to internal analog reference as well.
How to solve this.I'm using PIC12F675.
I added the load & checked the graph.It has a worst ripple.
I don't need much A/D resolution, need the analog in to be scale to 10 values.Except analog IN will this ripple affect to PIC functioning properly..!!!