Hello Cacharreo, This is my Opinion...
Hello Cacharreo,
I am glad that -at least- you saw the purple light!!
However, I will tell you some issues in your circuit...
1- Your 12 Volt power source is too low voltage to also drive the Drain-Source outputs.
2-Your Coil is too short of Turns, you need to go at least 200 Turns, but with higher voltage...and better MOSFET's
3-Your MOSFET'S are too slow (RdsOn 3.0 to 4.0 Ohms) it needs to be in the Milli ohms range, like 0.02Ohms !!...They have to be very fast switchers. Also, their Amperage at Pulsing rates are too low...(IDm=7.0 Amps), they should be at least 15 Amps.
I uploaded the Data Sheet of your MOSFET'S below, just without the last three letters "DFI"...
To my opinion you could see the purple light because that occurs at low frequency and low voltages of Hot pulsed voltages...but in order to go full blast and light up heavier loads you need to make your circuit more robust...
At least a power source of 24V / 4.5 Amps, and reducing voltage with a Voltage regulator (like LM317) to supply 555 timer source to 13-14 Volts...but using the Full 24 V to drive MOSFET'S Source-Drain lines output.
When you do that, then you have to add 220 or 330 Ohms resistors between MOSFET's Gate and 100 Ohms R1, that goes to leg 3 of 555. Also the Gate Biasing Resistor (R3) would have to be increased to -at least- 40-50K...(try simulator for best results...I used a 47K at 36V 6.6 Amps.
Now for the Oscillating circuit you did a great job!!...and that is why you are getting Radiant at Neons...
Now, when you step to higher voltage circuits, should not go too high on neons or will blow them into just an orange light, similar to typical, but brighter...but will never see on them again the purple-white plasma ball.
Purple light is beautiful isn't it?
Regards
Ufopolitics
Originally posted by torpex
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Hello Cacharreo,
I am glad that -at least- you saw the purple light!!
However, I will tell you some issues in your circuit...
1- Your 12 Volt power source is too low voltage to also drive the Drain-Source outputs.
2-Your Coil is too short of Turns, you need to go at least 200 Turns, but with higher voltage...and better MOSFET's
3-Your MOSFET'S are too slow (RdsOn 3.0 to 4.0 Ohms) it needs to be in the Milli ohms range, like 0.02Ohms !!...They have to be very fast switchers. Also, their Amperage at Pulsing rates are too low...(IDm=7.0 Amps), they should be at least 15 Amps.
I uploaded the Data Sheet of your MOSFET'S below, just without the last three letters "DFI"...
To my opinion you could see the purple light because that occurs at low frequency and low voltages of Hot pulsed voltages...but in order to go full blast and light up heavier loads you need to make your circuit more robust...
At least a power source of 24V / 4.5 Amps, and reducing voltage with a Voltage regulator (like LM317) to supply 555 timer source to 13-14 Volts...but using the Full 24 V to drive MOSFET'S Source-Drain lines output.
When you do that, then you have to add 220 or 330 Ohms resistors between MOSFET's Gate and 100 Ohms R1, that goes to leg 3 of 555. Also the Gate Biasing Resistor (R3) would have to be increased to -at least- 40-50K...(try simulator for best results...I used a 47K at 36V 6.6 Amps.
Now for the Oscillating circuit you did a great job!!...and that is why you are getting Radiant at Neons...
Now, when you step to higher voltage circuits, should not go too high on neons or will blow them into just an orange light, similar to typical, but brighter...but will never see on them again the purple-white plasma ball.
Purple light is beautiful isn't it?
Regards
Ufopolitics
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