و هل تنفع هذه الدائرة ؟
Parts List:
All resistors 1/4-watt, 5%, unless otherwise noted
R1 = 1K
R2 = 110 ohms, 1 watt
R3 = 2K2, 1 watt
R4 = 36 ohms
R5,R8 = 100 ohms
R6 = 39K
R7 = 22K
Capacitors
C1 = 10uF/25V, electrolytic
C2 = 3.9uF/350V, electrolytic
C3 = 1uF/25V, electrolytic
Semiconductors
D1,D2 = 1N4001, 50-volt rectifier
D3-D8 = 1N4007, 1000-volt rectifier
Q1,Q2 = D40D5, power transistor
Q3 = 2N2646, UJT
SCR1 = 2N4443
Other Components
B1 = 9V NiCad battery
S1 = SPST momentary pushbutton switch
T1 = 12 to 400 volts saturable-core transformer, See text
T2,T3 = 50 KiloVolt pulse transformer, 0.32 joules, 400 primary.
different values for C2, try 3.9

F (as shown in Fig. 1), 7.8

F, and 1.95

F