The wireless presenter green laser pointer looks very fashionable andfantastic

Boost inverter through the high-frequency transformer and power isolation after the high-frequency rectifier, give energy storage capacitor charging. Energy storage capacitor discharge before the high-pressure generated by the trigger circuit will load the xenon lamp breakdown ionization, precombustion circuit to the load xenon lamp to provide a stable the precombustion current load xenon lamp in a state of readiness before the discharge. Charged energy storage capacitor discharge switch and forming the inductor to the load discharge of the xenon lamp, in order to achieve the pump laser. Control circuit works. Pulsed YAG laser power control part of the main signal source, signal processing and shaping, delay adjustment, pulse power amplifier, the energy storage voltage control and isolation circuit. The wireless presenter green laser pointer  looks very fashionable and fantastic.
The main circuit structure we developed pulsed YAG laser power resonant switching technology, the shutdown can be achieved over current zero moment, can effectively reduce the switching losses, thus improving the conversion efficiency. The composition of the main circuit, control circuit complete charge control, discharge control, charge and discharge between the time the chain, Q delay control. Increase in the interface of the main circuit and control circuit isolation measures to prevent the occurrence of the main circuit control circuit runaway caused by interference of the control circuit. The charge control. The main circuit of the charging circuit consists of two IGBT inverter switching elements composed of half-bridge circuit, two switches off the phase difference to 180 °. And at the same time  green laser pointer  is very practical and useful for the convenient use and application.
Therefore, the phase difference of the two control signals must also be guaranteed to be 180 °. An inverter cycle, each IGBT inverter switch to turn on and off intermittent stream in order to prevent half-bridge circuit through the phenomenon, in between the two control signals between two adjacent pulse period , set a dead time, the two half-bridge circuit inverter switch in the off state. Charge control circuit block diagram shown in Figure 2. Circuit work, a two-way pulse width adjustable from the signal source, a phase difference of 180 ° oscillation signal, the synthesized frequency of the oscillation signal of two 22kHz. Charging, the charging and discharging chain and stop charge control side are high to allow the charge control signal through the AND gate.  green laser pointer  can meet various needs of the customer in various locations for different purposes.
After pulse amplification and isolation circuit to control the main circuit of inverter switch. When the main circuit energy storage capacitor to charge to a predetermined voltage by the feedback sampling, so stop charging control terminal is low, blockade of the charge control signal, so that the charging process stops. In addition, the discharge, the chain of control of the charge and discharge side have a width l The ~ 2ms low blockade charging control signal, so that the charging process to stop when the discharge. Discharge control. The main circuit of the discharge circuit by SCR switch, the conduction by the discharge control signal control, turn-off by the discharge current had zero self-shutdown. We set several fixed discharge frequency: lHz, 5Hz, 10Hz, 20Hz, 40Hz. The use and operation of the  green laser pointer wireless presenter is also very easy for the customer to master.
The design of green laser pointer  is considerate
It also has manual single discharge as well as external clock coding control functions. Discharge frequency diversity, and adjust the convenient and flexible features. As a result of the crystal oscillator, frequency accuracy is very high. Discharge control circuit block diagram shown in Figure 3. 2MHz clock pulse signal generated by the oscillator circuit work for the counter. When the Q-side, the counter counts up to the preset number of the comparator with the value equal to the numerical comparison, the Q-side output clock pulse width equal to the pulse signal. At the same time, the pulse signal, the counter is reset so that the counter re-start counting  green laser   . When the second counter counts to the preset number and numerical comparator equal.