oscilloscope driver

361

04:31:54

for those who may be interested this shows the principle of how i'm driving the x and y of my scope, tweak the pot see what i mean. had to use hi voltage to reduce black spot when switching between gates. knight rider in the making, just change the pot to 1kv oscillator ;)

published 11 years ago

carmona743

11 years ago

Nice I like the LEDs when you turn the potentiometer. I'm just starting to get into electronics, I'm a rookie. You seem really smart. May I ask a question? How do I get a pure DC wave when building a rectifier. I've been looking at the ones here but it seems like they're not pure DC I can still see it pulsing. Or is that normal to have some pulse?

roops1967

11 years ago

Hi mate, with heavy filtering you can minimise the AC noise. But difficult to totally get rid of it... maybe a bigger transformer or using switch mode... soz someone smarter can answer this one ;)

carmona743

11 years ago

Ok thank you.

thebugger

11 years ago

Just use a regulator. Heavy filtering is also a solution but it's not needed when using a regulator. For instance on the input of a simple zener regulator you may have a few volts pk-pk ripple but on the output it'll be a few mV. But you can't get pure DC like from a battery. It'll still have some ripple no matter what even though it may be a few mV. I recommend you look up the LM317 adjustable regulator (0-30V/1A) or üA723 that provides better regulation but lower output current that can easily be increased by simply adding a 2n3055 external transistor on the output (then you should get a few amps).

turbo

11 years ago

roops- i can see here a very good ac to dc converter

turbo

11 years ago

oops sorry - its analog to digital not ac to dc :)

turbo

11 years ago

oops sorry - its analog to digital not ac to dc :)

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