Vishay spec's the Vgs(th) to be anywhere between 2 and 4 volts. ?So your gate bias for a 100ma drain current could likewise be different by as much as 2 volts and still be in spec. ?
?If you swap out a blown IRF510 with a new one and just power up, it could immediately blow the new one. So important to set bias to minimum when swapping it out, and go through the bias adjustment procedure at power up.
Jerry, KE7ER
On Mon, Feb 6, 2017 at 04:39 pm, Ion Petroianu wrote:
I can confirm Randy's results, except for Gate of Q15. Mine is only 4.3V, but that is maybe due to my adjusting the idle current to exactly 0.1A.
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