5 0 316 KB
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
©