As shown in the figure, it is an automotive electronic igniter circuit composed of 555 timing circuit, voltage regulator, resistor, capacitor and so on. This circuit mainly uses the +12V power supply on the car to electronically ignite the car. China manufacture for Popular Custom Vape Pen, high quality battery, quality e-liquid and food safty material. Prefilled Vape Newmax Electronics Co.,Limited , https://www.advvape.com
In the figure, the +12V voltage is output to 9V through the IC1 (7089) three-terminal regulator, which serves as the power supply for IC2 (555). 555 and R1, R2, C2, etc. constitute an astable multivibrator. Once it is powered up, its oscillation frequency is f=1.44/(R2+2R1)C2 The oscillation frequency of the parameter is 528Hz.
The oscillating pulse output from 555 (IC2) is applied to the base of VT1 via R3 current limit, and the step-up transformer T is driven by amplification to generate an ignition voltage of about 1500 on the ignition coil. The spark distance at high voltage discharge is up to 12 mm. 