resistor
Posted by
hugo_cnc
on 2002-07-14 11:11:54 UTC
Hi all
I want to build a mariss's power suplly energy dump circuit (a mouth
full). I'm not sure how big the resistor must be (R7). I made a small
calculation and I was wondering if it's somewhat right.
The resistor can be 20 watt one. I use 70 Volt power supply so the
current is I=P/U so 20/70= 0.29A. Therefore the resistor must be
something like R=U/I so 70/0.29=245 ohm. Is this right or am I miles
of.
Thanks
Hugo
I want to build a mariss's power suplly energy dump circuit (a mouth
full). I'm not sure how big the resistor must be (R7). I made a small
calculation and I was wondering if it's somewhat right.
The resistor can be 20 watt one. I use 70 Volt power supply so the
current is I=P/U so 20/70= 0.29A. Therefore the resistor must be
something like R=U/I so 70/0.29=245 ohm. Is this right or am I miles
of.
Thanks
Hugo