Salas could you help me how to calculate the ripple? knobs: amplitud 5mV/cm & timebase 0.5us
Without bipolar BG 100uF 50V connected at the output sense + & sense- I have the same ripple, it's OK?
I have to change also the IRF610 to decrease ripple?
P.S. I'm like a boy playing with a new toy (scope)
Without bipolar BG 100uF 50V connected at the output sense + & sense- I have the same ripple, it's OK?
I have to change also the IRF610 to decrease ripple?
P.S. I'm like a boy playing with a new toy (scope)
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Felipe, were the irf530n damaged?
Also, see here how to use your scope using an oscilloscope
Also, see here how to use your scope using an oscilloscope
The DMM is not so reliable to test them, especially, if you want to reuse something in a circuit.
I use a 9V battery between G an S to turn them on and then short the legs with my fingers to turn them off. Put the DMM to check continuity between D and S.
This is no the most sientific method, but works for me.
Maybe other members can suggest a better method.
I use a 9V battery between G an S to turn them on and then short the legs with my fingers to turn them off. Put the DMM to check continuity between D and S.
This is no the most sientific method, but works for me.
Maybe other members can suggest a better method.
Right channel also changed IRF530 also NO OSCILLATION.
As you can see both bad IRF530 were IRF530N "N" so attention the rest of diyers.
Aha, so it was weird semi issue after all. Oscilloscope is your friend. Was it IR brand or copy maker's?
Aha, so it was weird semi issue after all. Oscilloscope is your friend. Was it IR brand or copy maker's?
Was IR brand supplied by Mike aka Tea-Bag for the GB
Was IR brand supplied by Mike aka Tea-Bag for the GB
Did you mount the new one by shorter legs or something changed in respect to affixing it to the sink?
Did you mount the new one by shorter legs or something changed in respect to affixing it to the sink?
Nothing changed only the mosfets.
Now all 4 regs with Zobel MKT+R because have less ripple.
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Salas could you help me how to calculate the ripple? knobs: amplitud 5mV/cm & timebase 0.5us
Without bipolar BG 100uF 50V connected at the output sense + & sense- I have the same ripple, it's OK?
I have to change also the IRF610 to decrease ripple?
P.S. I'm like a boy playing with a new toy (scope)
This does not look like ripple. Looks random. As it is set, turn off the reg, to see what is residual pick up or isn't.
Was it replaced from the same bunch? Or bought at a different time?
Bought a different time always supplied by Mike aka Tea-Bag
This does not look like ripple. Looks random. As it is set, turn off the reg, to see what is residual pick up or isn't.
I can't see any difference at the scope with or without lytic turning off the reg.
Salas
what type resistors to use at CCS set and zobel - metal film or anything else, what brand
In CCS I had used thick film Caddock as better to MOX and metal film 1% on other positions, no special.
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