Tesla Coil Driver Using SG3525 1 PDF [PDF]

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LOW VOLTAGE TESLA COIL DRIVER BASED ON SG3525 High Current PWM Tesla Coil (Transformer) Driver is designed around SG3525 IC and high current output driver MOSFET. This project is simple solution to drive any small tesla coil or EHT since it has two potentiometer for Frequency and PWM adjust. High current Mosfet can handle 5Amps continues even more with large size heat sink. Simple to use project to ignite the Tesla coil or EHT. ¦ Supply input 15 to 24 VDC ¦ Load-Lamp 12 to 24 VDC @ 5 A Ideal (10 A Peak) ¦ Onboard preset for frequency adjust ¦ Frequency adjustable 4 KHz to 30 KHz ¦ PWM Duty cycle 0 to 100% (+/- 5%) ¦ Potentiometer for dimming adjust ¦ Soft Start facility ¦ Clamp diode for protection ¦ Power-On LED indicator ¦ Compact design and high quality ¦ Lamp and supply connection via screw terminal connector ¦ Four mounting holes of 3.2 mm each ¦ PCB dimensions 56 mm x 42 mm



SR. QTY.



7812



OUT 1K



PWM ADJ 16



10K POT



P1



COMP



1



-IN



6



U1 SG3525A



R2 R3 1K 120E



VC



+IN



C2 10uF/50V



C3 220uF/35V



OUTA



11



OUTB



14



C5 10nF



GND



SS SHDN



CT DISCHG



CN2 LOAD



D2 1N5822 R4 2.2K Q2 IRFP250



Q1 BD139



8 + C4 22uF/50V



DESC RIPTION



1



C N1



2 PIN SC REW TERMINAL C ONNEC TOR



2



1



C N2



2 PIN SC REW TERMINAL C ONNEC TOR



3



1



C1



0.1uF



4



1



C2



10uF/50V OR 63V



5



1



C3



220uF/35V



6



1



C4



22uF/50V



7



1



C5



10nF



8



1



D1



RED LED 3MM



9



1



D2



1N5822



10



1



PR1



100K PRESET



11



1



P1



3 PIN BERG C ONNEC TOR



12



1



Q1



BD139



13



1



Q2



IRFP250



14



2



R1,R2



1K



15



1



R3



120E



16



2



R4,R5



2.2K



17



1



U1



SG3525A/KA3525A



18



1



U2



7812



19



1



POT



10K POTENTIOMETER



20



1



SOC KET



16 PIN DIP IC SOC KET



21



1



HEATSINK HS09045



22



1



SC REW



SC 02907



23



1



NUT



NT02900



For 12 VDC Supply Input & Load : Omit U2 IC and use jumper as shown below



FREQ ADJ



7812



OUT + C1 0.1uF



GND



U2



CN1 Connector : Supply Input 15-24 VDC CN2 Connector : Load (Lamp) 15-24 VDC PR1 Preset : Frequency Adjust P1 Pot : PWM Adjust D1 LED : Power Indication



+V



IN +



C2 10uF/50V



C3 220uF/35V



03038



www.twovolt.com www.youtube.com/thetwovolt



GND CN1 SUPPLY INPUT 12 VDC



CN2 LOAD 12 VDC



D2 1N5822



www.twovolt.com



CN1 SUPPLY INPUT 15-24 VDC



12



7



GND



+



RT



10



5



C1 0.1uF



13



2.2K



100K PRESET PR1



R5



VREF



9



2



+ 15



R1



+V



IN



+VI



D1 RED LED 3MM



GND



U2



REF.



1



Q2 IRFP250



Author Rajkumar Sharma



www.koteq.com



©