 Winding a MOSFET gate circuit transformer for a 4046 PLL SSTC
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GrantX
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Mon Sept 28 2015, 12:42PM
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Registered Member #4074
Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
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The transformer looks like it'll work fine, just make sure to twist the connecting wires and keep them as short as possible.
The dots on the schematic show the polarity or 'phasing' of each coil, basically they tell you which end of the coil to connect. In your diagram, I see that coil A is the primary, with B and C driving the gates. Let's say that coil B connects to FET 1 (the high side) and coil C to FET 2. If you connect 1B to high side Gate 1 (and 2B to source) then 2C must be connected to Gate 2 on the low side (with 1C to source).
Simply, the wires to one MOSFET needs to be reversed, so that only one turns on while the other is off. If the wires aren't reversed, both MOSFETs turn on together and short out the DC supply.
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tarakan2
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Mon Sept 28 2015, 05:04PM
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Registered Member #3859
Joined: Sun May 01 2011, 03:47PM
Location:
Posts: 179
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Thank you. I hope that I won't short out the power supply with my skills.
Can I build this circuit with a full-wave rectifier bridge for 120VAC american electric grid voltage?
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