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I wanted to add PWM control if possible. Sorry I should have added that to my question.
I will not need 1 MHz but I was looking for an upper limit so I threw that out there.
The Arduino NANO PWM frequency can be set to ~32kHz (or ~64kHz depending on which PWM pins are used) which gives about...
Thank you Klaus.
All very true, the original drivers used IGBTs or MOSFETs for those reasons. But they generally require a high driver voltage which doubles the building drama.
Can anyone suggest an upper limit of the switching frequency. Could they manage 1MHz?
I have a smartdrive washing machine motor. These are normally driven by a 400VDC power supply using FETs or similar transistors to switch the power to the coils.
My plan is to have a 80V rechargable battery and switch the coil power with BDX33C and BDX34C Darlington pair transistors (because...
Thanks c_mitra.
It was an 8 stepper with 4 coils each a DC resistance of 5 ohms. So with them connected in series there are two coils of 10 ohms each.
It is a stepping motor so not sure if speed is a factor. The coils are on all the time with a constant current of 1 amp whatever the load...
Thanks Guys. Looks like there is no hard and fast rule. Can't find a datasheet so will work on the premise that if it is not too hot it is not too hot.
Hi. I have an 8 wire stepper motor which I have connected the coils in series to run off an A4988 driver.
The rating on the back of the motor is 5V 1A
I am driving it with a 20 volt supply. To adjust the current I set the driver stepping once every 5 seconds and measured the current through...
Hi guys. I am sure this question has been asked before but when I search I get so many answers that don't really apply so I am confused.
I have a 20V PSU which I want to power a 3 phase permanent magnet motor (brushless motor I guess).
If I could, I would like to use 6 of TK40E06N1 (S...
Thank you Klaus. Those were the key words I needed.
For anyone who is interested:
- Use 2 core shielded cable for each channel.
- at 3.5mm plug. connect i core to left (or right) signal and the other core and the cable shield to the common
- At the speaker input, signal core goes to (+), the...
HI. I have just bought some second hand Phonic PS6 monitor speakers to connect to my phone.
So I connected a 3.5 mm jack cable to 2 1/4" plugs for each speaker by taking the common and red wire from the 3.5mm plug to the + and - input of one speaker and the common and white wire to the + and -...
Hi Klaus. Not sure what you mean.
This is a three wire motor so at least two, possibly three, of the coils must have current going through them. Can't just energise 1.
Hi. I have salvaged a three coil stepper motor and am a bit confused about how to pulse the coils to make it move. Here is a cross section image of the motor:
It has 32 magnets on the rotor around 48 coil stator. These coils are connected in three groups (A, B and C) of 16 coils each. The...
Hi Brad. Yes I would if I was looking to do something practical from an interest perspective.
But, I have no 40V clock signal. Be more straight forward if I have a clock to set it up to control Vout by straight PWM.
This concept of this circuit is more suited to increasing (pumping up) the...
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