Lighters for gas collected by the circuit of Fig. 4.60, has been working for several dozen, and they all behave perfectly. The design of the lighter is simple, not contains scarce parts, simple in adjustment. A feature of the scheme was that it is powered by AC power directly from the network via capacitor C1 and resistor R1. The VD1 diode in this circuit operates in the avalanche breakdown reverse voltage, i.e., represents, in fact, fast acting Zener diode, paired with the thyristor VS1 is an analogue of dynistor (for example, you can include two serially connected dynistor CNV).
VD2 diode protects the thyristor VS1 from reverse voltage of self-induction of the winding I of the transformer T1 and improves the operation of the generator. The generator produces a short pulses with a frequency of several hundred Hertz, which are then induced in the coil II transformer T1 to 10 kV and strikes the spark gap.
The transformer T1 is without core, is wound on a spool of nylon (plexiglass, PTFE) with a diameter of 8 mm and consists of three sections, the width of each of which 9 mm is useful for T1 ready nylon sewing bobbin, sticking their among themselves. First, the coil is wrapped II - 3x1000 of turns of wire PETV or PEV-2 in diameter of 0.12 mm. the Input end of the wire in each section must be thoroughly insulated with Teflon tubing or varnished cloth, otherwise breakdown occurs isolation.
All cylinders T1 PROFINET in a water bath for a few minutes. Then the winding II in each section is wrapped 2-3 layers of electrical tape on top of the insulation stack the winding I - 3x10 turns of wire sew-2 with a diameter of 0.45 mm. the Resistor R1 is selected denominated within 12...16 ohms. Diodes VD1 - DA, D, D; VD2 - KDA, CD, DB. The thyristor VS1 - COE, G, and you can also CU, CO, with CO reverse voltage is not less than 150 V. as a button is convenient to use the microswitch type MP. Capacitors C1 and C2 - type MBM, K73, etc. on voltage is not less than 160 V.
The discharger is coupled insulated wire with steel or copper conductors, which is placed inside a metal tube. The tube at the end reams under the window.
The wire attached to the output of the epoxy glue. The establishment of the lighter is reduced to the selection of the diode VD1 to the emergence of reliable generation. Tweezers or shift push the wire electrodes of the spark gap to the optimum distance and education the purse sparks. The latter, of course, in doing unplugged the lighter. Sometimes you need to pick up the capacitance C2. The body of the lighter can serve as whatever the case, for example, from a toothbrush.
Author: Seman A. P.