K
kell
- Jan 1, 1970
- 0
I'd like to regulate the power through a load
using a basic buck circuit along these lines
14v
|
|
,-----+-------,
| | |
| | |
| | load
| | |
| | |
| | |
| | |
| '--|(---+
| |
| |
| )
| )
| )
| |
| |
'------|<-----+
|
|
|-'
PWM-----||
100kHz |-,
|
|
gnd
I have a junkbox toroid that I identified as mix 26
similar dimensions to Amidon's
iron powder toroid T-130 as spec'd here:
http://www.amidoncorp.com/aai_ironpowdercores.htm
wound with 12 ga solid copper wire for about 25 uH
I'll have about 20 amps going through the load.
The core should be able to support that much dc current,
according to Amidon's website.
My question: the 12 ga wire will present a lot of impedance
to the superimposed 100 kHz ac because of skin effect.
How much of a problem will that pose?
using a basic buck circuit along these lines
14v
|
|
,-----+-------,
| | |
| | |
| | load
| | |
| | |
| | |
| | |
| '--|(---+
| |
| |
| )
| )
| )
| |
| |
'------|<-----+
|
|
|-'
PWM-----||
100kHz |-,
|
|
gnd
I have a junkbox toroid that I identified as mix 26
similar dimensions to Amidon's
iron powder toroid T-130 as spec'd here:
http://www.amidoncorp.com/aai_ironpowdercores.htm
wound with 12 ga solid copper wire for about 25 uH
I'll have about 20 amps going through the load.
The core should be able to support that much dc current,
according to Amidon's website.
My question: the 12 ga wire will present a lot of impedance
to the superimposed 100 kHz ac because of skin effect.
How much of a problem will that pose?