Time base oscillator triggers the introduction of the ballroom strobe light circuit

The circuit shown in the figure is a ballroom strobe light circuit triggered by a time-base oscillator. Circuit principle: This circuit consists of three parts: power supply, oscillation, and flash. In the power supply circuit, 220V voltage is directly supplied to the capacitor after VD1 rectification. C3.R1 combines two functions of limited current and flash tube discharge. A stable voltage of about 12V can be obtained at both ends of VD2, and the oscillator composed of the NE555 time base circuit is shared. When the SB button is pressed, the contact of the relay KR is actuated by one suction and the ground is closed. The stimulation of T excites tens of thousands of volts of high voltage, triggering the flash tube to emit a strong light. Adjust R10, the flash frequency can be changed between 1~10Hz.