Yes, with some of the noctua fans you need to have your ear pretty close before you hear them. You don't need much cfm to make a big difference in cooling either. The air needs to be pushed through the fins of the heat sink. Figure 6 in this link shows how much difference it can make with just a little cfm.
How to Select a Suitable Heat Sink
How to Select a Suitable Heat Sink
Might need to do a pcb for transformer if the pins don't line up on proto board.
The rest should be doable hack style.
The rest should be doable hack style.
GOOD CATCH!!
Ill wait a bit until the rest of my mistakes are discovered and then post a revision!
What lead spacing and diameter have you allowed for the 1000uF caps.
Some people are anal about using Elna Silmic Caps, so something to consider.
Some people are anal about using Elna Silmic Caps, so something to consider.
Lead spacing on 1000mfd caps is 7.5mm which I believe is the spacing for the highest voltage 18x40 Elnas.
Thanks, here's a revision with your suggestions!
Attachments
If possible I would like a few different spacings for capactors depending on what type of cap you want to use. Little more flexible more options.
What is this 4.5V box (in the schematic) that is connected to one end of the 10K resistor supposed to be?
Thanks,
Thanks,
Will need to build a regulated voltage circuit to bias the mosfet to 4.7v. Can use an adjustable regulator such as the LM317 or LT1083. 1083 is a low dropout type.
Might also need a second transformer and rectifier for the voltage reg.
Some options.
1) Take voltage from drain of mosfet and use a simple trim pot. Generg's idea
2) Take voltage from supply then add either zener with trimpot or tl431
3) Take voltage from separate transformer with zener or tl431 etc (probably over kill)
1) Take voltage from drain of mosfet and use a simple trim pot. Generg's idea
2) Take voltage from supply then add either zener with trimpot or tl431
3) Take voltage from separate transformer with zener or tl431 etc (probably over kill)