30-04-2013, 12:54 PM
I've been simulating some circuits to get high voltage EHT to power the CRT, and preventing noise to reach the Y amplifier
To get the -1,5kV, I'm thinking to rectify 600V AC 60Hz using a bridge rectifier. As I have -600V to supply the sawtooth generator, I will add in series this voltage with that one to get around 1,4kV. That's enough for the CRT according to datasheet.
This circuit will have a ripple.
For the +4kV I want to use a voltage quadrupler from an 850V AC winding. The output will be around 4kV according to simulation.
This circuit will also have a ripple.
My doubt is about the ripple.
How do both ripple could affect to electron beam?
Will a see a dotted line in the screen instead of a hard line?
To get the -1,5kV, I'm thinking to rectify 600V AC 60Hz using a bridge rectifier. As I have -600V to supply the sawtooth generator, I will add in series this voltage with that one to get around 1,4kV. That's enough for the CRT according to datasheet.
This circuit will have a ripple.
For the +4kV I want to use a voltage quadrupler from an 850V AC winding. The output will be around 4kV according to simulation.
This circuit will also have a ripple.
My doubt is about the ripple.
How do both ripple could affect to electron beam?
Will a see a dotted line in the screen instead of a hard line?
