Hi all,
I'm going to build a Bride of Zen pre-amp but I have some difficulties finding some parts.
Can someone tell me the equivalent of IRF610 and TIP29GCE ?
Is IRF610 = IRF9610?
These IRF and TIP will be solded on the same side with other parts or on the other side?
I have finished the PCB as in the passdiy.com.
Thanks heap.
Cheers!
I'm going to build a Bride of Zen pre-amp but I have some difficulties finding some parts.
Can someone tell me the equivalent of IRF610 and TIP29GCE ?
Is IRF610 = IRF9610?
These IRF and TIP will be solded on the same side with other parts or on the other side?
I have finished the PCB as in the passdiy.com.
Thanks heap.
Cheers!
TIP29:
The operating voltage between C and E is about 25V and current is less than 0.5A. I however would apply my "don't worry be happy" factor 2. If so, any NPN TR rated at max. VCE of 50V and 1A or bigger will be okay.
IRF610:
Buy all IRF510/ IRF520/ IRF620/ IRF630 /IRF140 /IRF240/ IRFP250N . . .
And take experiment of sound differences from them . . .
Lot of fun . . . !!!
You will love diy, Likediy . . .
The operating voltage between C and E is about 25V and current is less than 0.5A. I however would apply my "don't worry be happy" factor 2. If so, any NPN TR rated at max. VCE of 50V and 1A or bigger will be okay.
IRF610:
Buy all IRF510/ IRF520/ IRF620/ IRF630 /IRF140 /IRF240/ IRFP250N . . .
And take experiment of sound differences from them . . .
Lot of fun . . . !!!
You will love diy, Likediy . . .
that I should have said "min" . . .
Babowana said:
Even if these IRF510, IRF520, IRF610, IRF620 all can be used in lower power stages
IRF610 is popular among builders & designers. Including Nelson.
All these 4 MOSFET have slightly different data.
What I think is, the relatively low input capacitance of IRF610 is a little in favour.
In the Datasheet you will see this value called Ciss and is measured in pF.
In short, the input of a transistor with lower input capacitance
is easier to drive for the circuit attached to its input.
Very big MOSFET with higher Ciss ( >2000pF ) needs more bias current
from predrivers or voltage amp stage, in order to keep performance good.
lineup - thinks IRF610 is a good choice for preamps and headphone amps.
30 - 30 will give something like
45 - 45 VDC
Transformer VA can never be 'too large' and powerful.
But certainly be too small and weak.
But there are some few drawbacks with overdimensioned trafos.
1. Cost you extra money, even if you maybe get no noticable result, at the output, from it.
this is a waste of money.
2. Bigger trafos gives more electromagnetical radiation around them.
Not the optimal, especially if housed in same case as your amp circuit.
3. Makes amplifier or power supply very heavy to carry, move and transport.
4. Bigger trafos may have more inrush current spikes.
This is when you swtch on amplifier. This one I am not so sure of.
some one may correct me, if I am wrong.
When building a Nelson Pass amplfier, you can 100% count on
his recommendation for transformer is already a bit 'more than normal'.
So there is no real need or significant improvement going beyond this.
But if you do, nothing bad will happen.
If something will change, it probably some very small improvements
in some measurable data.
But hardly something you notice with your 2 sound sensors at both sides of your head.
lineup cant hear you ... but read you
45 - 45 VDC
Transformer VA can never be 'too large' and powerful.
But certainly be too small and weak.
But there are some few drawbacks with overdimensioned trafos.
1. Cost you extra money, even if you maybe get no noticable result, at the output, from it.
this is a waste of money.
2. Bigger trafos gives more electromagnetical radiation around them.
Not the optimal, especially if housed in same case as your amp circuit.
3. Makes amplifier or power supply very heavy to carry, move and transport.
4. Bigger trafos may have more inrush current spikes.
This is when you swtch on amplifier. This one I am not so sure of.
some one may correct me, if I am wrong.
When building a Nelson Pass amplfier, you can 100% count on
his recommendation for transformer is already a bit 'more than normal'.
So there is no real need or significant improvement going beyond this.
But if you do, nothing bad will happen.
If something will change, it probably some very small improvements
in some measurable data.
But hardly something you notice with your 2 sound sensors at both sides of your head.
lineup
cant hear you ... but read you- Status
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