Lighter for gas. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Consumer electronics. Home, household, hobby
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Lighters for gas, assembled according to the scheme in fig. 4.60 has been running for several dozen now, and they all work flawlessly. The design of lighters is simple, does not contain scarce parts, and is easy to set up. The peculiarity of the circuit is that it is powered by AC voltage directly from the network through the capacitor C1 and the resistor R1. Diode VD1 in this circuit operates in reverse voltage avalanche breakdown mode, i.e. is, in fact, a high-speed zener diode, paired with a thyristor VS1 is an analogue of a dinistor (for example, two KN102V dinistors connected in series can be switched on instead).
The diode VD2 protects the thyristor VS1 from the reverse voltage of the self-induction winding I of the transformer T1 and improves the operation of the generator. The generator generates short pulses with a frequency of several hundred hertz, which are then induced in the winding II of the transformer T1 up to 10 kV and break through the arrester.
Transformer T1 - without a core, wound on a coil of nylon (plexiglass, fluoroplastic) with a diameter of 8 mm and consists of three sections, each of which is 9 mm wide. It is convenient to use ready-made nylon sewing bobbins for T1 by gluing them together. First, the winding II is wound - 3x1000 turns with a PETV or PEV-2 wire with a diameter of 0,12 mm. The input end of the wire in each section must be carefully insulated with fluoroplastic tubes or varnished cloth, otherwise insulation breakdown will occur.
The entire T1 coil is waxed in a water bath for several minutes. Then winding II in each section is wrapped with 2-3 layers of electrical tape and winding I is laid over the insulation - 3x10 turns with PEV-2 wire with a diameter of 0,45 mm. Resistor R1 is selected with a rating in the range of 12 ... 16 kOhm. Diodes VD1 - D219A, D220, D223; VD2 - KD102A, KD105, D226B. Thyristor VS1 - KU101E, G, you can also KU102, KU201, KU202 with a reverse voltage of at least 150 V. It is convenient to use a MP type microswitch as a button. Capacitors C1 and C2 - type MBM, K73, etc. for a voltage of at least 160 V.
The arrester is a paired insulated wire with steel or copper conductors, which is placed inside a metal tube. The tube at the end is drilled under the window.
The wire is fixed at the outlet with epoxy glue. Establishing a lighter comes down to selecting a VD1 diode until reliable generation occurs. With tweezers, the electrodes of the arrester wire are shifted or moved apart to the optimum distance and the formation of a powerful spark. The latter, of course, is done in a lighter turned off from the network. Sometimes it is still necessary to select the capacity C2. The body of the lighter can be any case, for example, from a toothbrush.
Author: Semyan A.P.
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