by sparkgap » Tue Jan 20, 2009 9:51 am
Here is some more dialogue regarding AS's cct from another thread:
Chemloc wrote:
If Flux Density is Important as you say, than so is the Drive to the Mosfet.
I Suggest you remove that 5 Volt regulator as most mosfets require a 10 Volt Gate Signal. Simply drive it with 12 volts,
Possibly a Fusing resistor and either a Zener or Movistor for added protection.
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AlaskaStar wrote:
Look up the Spec sheet for the IRF540N by International Rectifier.
5 volts is full turn on.
10 volts is over-driving.
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Chemloc wrote:
According to my databook:
Typical Threshold at 2 volts
Maximum Threshold at 4 volts
Maximum Gate voltage is 20 Volts.
Either way, If 5 volts is, as you claim, you have a 0.6volt loss out of the 555.
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AlaskaStar:
And splitting hairs long-way with a chainsaw is just as effective.
0.6 volts is nothing in comparison.
If you can do it better, I strongly encourage you to do so. I have seen your site, and you have an extensive knowledge of electrical...
I know you can do it more efficiently than I could, but in the same, I encourage you to do it better. Besides you have a web site and the online selling capacity.
“I shall not commit the fashionable stupidity of regarding everything I cannot explain as fraud.â€