Would there be any disadvantages in using 4 paralleled resistors with a value of 0,68 ohm instead from the standard 6 resistors with 1 ohm value(the 4 resistors would be rated at 5 Watt)?
(It is for an Aleph 60)
(It is for an Aleph 60)
Well, its not exactly the same, but I guess it is within the tolerances.
1/6=0,16666...
1/(4/0,68)=0,17
Just about 2 percent off and power rating 20 Watt instead of 18 so I guess it should be fine then.....
1/6=0,16666...
1/(4/0,68)=0,17
Just about 2 percent off and power rating 20 Watt instead of 18 so I guess it should be fine then.....
Ooops!
I don´t mean the resistors that are on the same boards as the Fets, but the resistors named R22- R27 on the "main" board of the Aleph 60.
I don´t mean the resistors that are on the same boards as the Fets, but the resistors named R22- R27 on the "main" board of the Aleph 60.
your choice
hi mats,
it´s up to you, even 2 0R33 parallel is ok as long as
their power handling ability is twice as high as the possible
power they have to handle.
Example:
10A x 1.65V = 16.5W -> each resistor should be 15W + to
be on the safe side.
You can calculate maximum current thru these resistors by
bias current divided by (1 - current gain of the CCS)
ALEPH2: 3 / (1 - 0.69) = 3 / 0.31 = 9.68 A.
Uli
hi mats,
it´s up to you, even 2 0R33 parallel is ok as long as
their power handling ability is twice as high as the possible
power they have to handle.
Example:
10A x 1.65V = 16.5W -> each resistor should be 15W + to
be on the safe side.
You can calculate maximum current thru these resistors by
bias current divided by (1 - current gain of the CCS)
ALEPH2: 3 / (1 - 0.69) = 3 / 0.31 = 9.68 A.
Uli
- Status
- Not open for further replies.