Tweet
I've seen different suggestions for resistance but don't remember seeing anything on pot material. What should I purchase(carbon, cermet, conductive plastic or wire wound)? How many watts? What resistance is best? Assume no avalanche current. For 1amp peak coil current and 5amp peak coil current, 1000pps. Other than maybe watts does 5amp peak coil current effect selection? I've searched but haven't found anything on allowable short term peak current.
-
-
Ordered two of these for the price. Work fine. Do get warm if you run them for a few minutes. All available Current is not running threw it. http://www.banggood.com/WXD3-13-2W-1...l?rmmds=search -
Originally posted by homefire View Post
Probably this will ad to much unwanted inductance to damping circuit.Comment
-
...i just use a resistor and a mosfet. 100 ohm resistor on drain of nmosfet and then vary voltage on gate. Resistor value will depend on type of mosfet. Works with p or n mosfets and later you can control it using cpu.
Pots are too noisy / expensive / etc.Comment
-
Nothing of significance. Doesn't even give a Inductance Reading on my M8 Transistor Tester（Ver.12864）. It can detect 10uH inductance levels. It's not that complicated.Comment
-
thinking Green means a trim for tuning only. so R unwanted 'parasitic' inductance is not be a factor in this case.Originally posted by WM6 View PostComment
-
"Damping tool" ?
Something like this?
Comment
-
Comment
-
Comment
-
Comment
-
To get a slightly improved version:Originally posted by ivconic View Post
Replace R2 with a 200R, and R3 with 2k. This will provide a range of values between 118R and 1k672.Comment
-
i would take i simple wire ressistor 5Watt (for Tuning) in row with a simple 2w fixed resistor (for minimal damping)Comment
-
This can be helpful in other construction cases as well:
http://www.ebay.co.uk/itm/1R-9-99999...cAAOSwyjBW54s9Comment
-
-
Qiaozhi has wrong.
Min resistance is 181 not 118 OhmsComment
Comment