PWM...HOW TO MAKE THE LAWTON PWM CIRCUIT

THIS IS EASY HOW TO ASEMBLE THE DAVE LAWTON CIRCUIT. i hope everyone tries it out..........
http://www.docstoc.com/profile/irondmax

Category:

Science & Technology

Tags:

• dave
• lawton
• hho
• stan
• meyers
• hydrogen
• PWM

[gilligan80]

There is an easier way to achieve somewhat better results with the single transistor flyback driver circuit that is available online. Look for the Meissner Oscillator. Too much to go into in the comments section here... if anyone is interested in info id be willing to share... i have trouble reaching higher freq's with the lawton circuit... for some reason the other one is easier to understand and you can tune it by moving the feedback coil...

[irondmax]

@gilligan80 this circuit is more adjustable then your circuit

i am sure your circuit does what ever it does

if you want higher frequency with a circuit, just add transistors

i can easily power up a car coil with this circuit here and 1 transistor and a couple resistors, and i garintee much more adjustable then your circuit

there are plenty of simple circuits for many things, its good to learn them all

good luck to you with that

[guruji243]

Hi Irondmax in one of your answers you said that one can add two Mosfets for more amps. So just add another with the one used? 3 leg to the other?

Thanks

[irondmax]

@guruji243 no

the other mosfets must be added just like the first....the mosfet is just a switch......the rest of the circuit is what turns on the switch

think of the mosfet as a light switch.......your finger is the rest of the circuit

if you want more power......the same finger turns on all the switches

the irf640 is 15 amps......use 2 and you now have 30 amps

there is 2 resistors on the trigger of the irf640.....repeat resistor and irf ...as needed

basically

[dreamsean]

Sir whats the used of capacitor in this circuit??? coz i saw last time your video you didn't touch the selector switch for for the capacitors to show us the difference out put... does those capacitors has mean a lot for this or for just for viewing oscilloscope purposes only???? why this circuit has dual circuit???? whats the used of 2nd face of the circuit???? 100 thanks for enlightening always...

[irondmax]

@dreamsean capacitors add more frequency selections to this circuit

the dual circuit ..........one circuit turns the other circuit on and off.............a duty cycle

[irondmax]

@dreamsean negitive most always goes to the ground ........lawton and my diagram the neg gows to ground

all caps have one sided at ground......if you see a - put it to ground............the selector switch........all caps pos are soldered to selections on the switch and all grounds will touch the gound

[dreamsean]

Good day Sir Robbinhood, i just notice when i am placing all capacitors listed below of the circuit from first face or left side of the circuit, from cap. 14 to 16... those positive (+) side are connected to rotary switch..... and compared to Dave Lawton designed capacitors negative (+) side connected to rotary switch.......please help, it seems confusing.....again 100thanks and God Blessed!!!

[irondmax]

@dreamsean all pwm amp load depends on the mosfet and if ypu have a fan to cool the mosfet

heat in the circuit will cause failure

[dreamsean]

Good day Mr. Robbinhood, up to what suggested amps to be used in this circuit sir?????!00 thanks