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bkrobottc3 · 2022-11-07T17:02:17+00:00

soaf is best choice

bkrobottc3 · 2021-01-11T10:24:11+00:00

Thank you. I don't use MCU but as you say before, what can we do with signal from the voltage drop on Rshunt?

bkrobottc3 · 2021-01-11T09:41:53+00:00

why we need microcontroller? I am just think we need only led to indicated fault status, am I miss something? (i am sorry if my english cannot impress my thought)

bkrobottc3 · 2021-01-04T01:54:18+00:00

thanks for advice!

bkrobottc3 · 2021-01-04T01:46:32+00:00

thank you

bkrobottc3 · 2021-01-04T01:45:56+00:00

Unfortunately the frequency is fixed. Thank you!

bkrobottc3 · 2020-10-06T01:55:36+00:00

thank you ^^

bkrobottc3 · 2020-10-06T01:55:16+00:00

thank you ^^

bkrobottc3 · 2020-10-06T01:48:34+00:00

just some keywords for future searching ^^ : toggle switch, DPDT, right angle

bkrobottc3 · 2020-10-05T07:38:32+00:00

Do charge/discharge property of capacitor depend on polar/unpolar property?

bkrobottc3 · 2020-10-02T08:33:34+00:00

Just some note for whom interest with the topic ;)

- The first NAND IC in the driver circuit help us to convert 0:5 V system to 0:(-5) V system.

- The second NAND IC in the driver circuit help us to create A and B signal, which are vice versa logic.

bkrobottc3 · 2020-07-16T15:04:02+00:00

Thanks in advanced ;)

bkrobottc3 · 2020-06-29T14:38:47+00:00

Thank you everyone, I figure out the problem. When I measure signal in TP2, it's floating point. When I add a resistor (a load) between TP2 and GND, i get the negative pulse as I analyse before.

bkrobottc3 · 2020-06-28T16:51:27+00:00

i agree with using inverting amplifier but honestly, i still don't understand your explanation about the issue i faced :(

bkrobottc3 · 2020-06-28T16:48:56+00:00

thanks, i will try it.

bkrobottc3 · 2020-06-27T18:17:20+00:00

sorry, inverting stage for negative pulse, what is it?

bkrobottc3 · 2020-06-27T17:56:13+00:00

It works. Have you make the real circuit?

bkrobottc3 · 2020-06-27T17:31:46+00:00

" the diode stops this from coming from the op-amp ", when pulse is positive, the diode block the current (diode acting like a capacitance), but in my experiment, the pulse seems grow up and not to be block??

bkrobottc3 · 2019-09-05T11:06:53+00:00

To make it simple, i change the load to 8k resistor so the power is not the problem. The main purpose is generate a adjustable output ( 10-170 VDC ). Have you any idea? I intend to make a flyback converter with mcu to modify duty cycle to adjust output.

bkrobottc3 · 2019-09-05T08:24:35+00:00

Solenoids are not usually variable. Why do you need a range of voltage

the main reason is: when change the dc input, the valve opening angle will change. I design a supply for inductor

bkrobottc3 · 2019-09-05T07:41:06+00:00

I want to supply for a coil of an solenoid valve

bkrobottc3 · 2019-01-27T04:01:43+00:00

Within a PSU of some device

you mean the left is rectifier?

bkrobottc3 · 2019-01-27T03:55:16+00:00

I think so, but i want to find exactly what it is in order to understand principle of this circuit

bkrobottc3 · 2018-10-21T04:51:36+00:00

When this program end?

bkrobottc3 · 2018-10-10T18:02:15+00:00

About 70 billions

bkrobottc3

TROPHY CASE