9130 P-channel Power Mosfet
That is not similar to the circuit we are working on because the Fet in the drawing is a P-Channnel FET. That diode is protection for the FET. In our project, the coil is connected to Battery+ and we 'ground' the other end with our N-Channel FET. Most of the FETs we're using have that protection diode built in. In the case of cikljamas's drawing (from PJK Book July 2010) you would ADD a Recovery Diode going from the the coil/FET node to battery-.
If you look at the schematic for some of the Mosfet we have been using you will see the protection diode in the Mosfet symbol. Most Mosfets whose part number starts with a "9" are P-Channel Mosfets.
Later
Originally posted by Farmhand
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If you look at the schematic for some of the Mosfet we have been using you will see the protection diode in the Mosfet symbol. Most Mosfets whose part number starts with a "9" are P-Channel Mosfets.
Later
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