Boncuk
New Member
That won't work.
Both MOSFETs will stay on because the LEDs (which won't light) prevent the gat capacitance from being discharged when the IC's outputs go low.
With other words you are telling me that Lab Center Electronics (UK) is selling a pile of junk with "PROTEUS - ISIS" for 4,500.00 lbs.
Further there is only one LED contained in the schematic, which is the power LED. The lamps connected to the power MosFets are light bulbs with 12Ω resistance, which can easily be identified by the filament drawn in the symbol, one of them lit.
To make sure the gate discharges a small value resistor (1K) could be connected from ground to the gate.
PWM circuits made using an NE555 timer prove that the Fet gates discharge quickly.
Boncuk