The appearance of green laser pointer is closely related to the development

KM1-high voltage main power contactor; KW2-vacuum pump motor contactor; in KM3-fan motor contactor; DL-low-pass filter; KB-control transformers; LD1-8-light; code LD9-12-fault indicator ; AN1-3-start control; of TN1-3-stop button. The above electrical components were installed in the laser power rack and operation of the lower part of the cabinet panel (where: HY installed in the lower part of the cabinet), as shown in Figure 1, Figure 2 shown. The figure shows only not dry (HY), phase (J0), but the flow (K1), and W given back to zero (K2), three-phase equilibrium (K3), but hot (FR1), the first open fan (in KM3, KM3 ') conditions are fulfilled, in order to start the high voltage main power. The yellow ray china laser pointer adopts some new technologies.
Power supply unit works. DC high voltage rectifier was DC high voltage E below shows adjustable high-voltage DC power systems TC control panel principle block diagram of the high-pressure silicon pile DZ boost transformer ZB. One: HL1,-3-Hall current transmitter; HL0-Hall current sensor; VC-thyristor smart module; PIT-current regulator; BH-unbalanced circuit; K1-3-protection relay; the W- command link; SA-main circuit. Instruction link W is given the command signal Vg, the regulator PIT operator to enlarge the output control the conduction angle α of the VC thyristor intelligent modules, adjustable AC voltage. In ZB boost, and then by DZ rectifier into a DC voltage sent to the anode and cathode of the laser CDL. This kind ofchina laser pointer has the strong visible feature.
Laser glow discharge has negative resistance characteristics, so the circuit in series with the pin row of resistance, in order to ensure the stability of the discharge. HL0 Hall current sensor, the output reflects the size of the injection laser current, the output current signal sampled feedback signal VF. VF and the command signal the Vg superimposed, the difference adjusted by the PIT operator to control the conduction angle α of the VC (increasing or decreasing), so that the injection laser current to maintain the stable, to ensure the stability of the discharge. Power supply unit to protect the link. In order to ensure the laser safe operation, the power supply unit uses multiple protection link. Overcurrent protection link. The DC side, from the HL. The blue violet ray china laser pointer will be mainly discussed during the meeting.
Sampling of the Hall sensor signal VF and set the overcurrent threshold voltage compared to more than a set voltage protection relay K1 action, cut off the high voltage power supply circuit to stop the discharge overcurrent light, such as VF. AC side input of the vacuum pumps, blowers, exhaust fan, the main transformer and thyristor intelligent modules are equipped with circuit breakers, and in strict accordance with the current size of the actual work, select the capacity of each circuit breaker, in the event of over-current phenomenon. the corresponding circuit breaker tripping. Overvoltage protection link. High-power lasers work in a high-voltage, low current conditions, over-voltage protection link is very significant. The AC side, for thyristor intelligent over-voltage protection module take RC varistor two, absorption and with the. The appearance of green laser pointer is closely related to the development of the materials.
Former to solve the role of over-voltage inhibit the thyristor on and off, the latter to solve the energy of lightning and other reasons, the longer the duration of the overvoltage absorption. In the DC side (pressure side), plus the RC snubber circuit. In addition, the the thyristor intelligent module input control side, with clamp control circuit to prevent a given Vg is too high causing high discharge voltage and discharge current is too large. Three-phase current unbalance protection link. In the process of three-phase AC voltage regulator, due to the unbalanced three-phase voltage, the thyristor phase modulation angle α small a value may be a DC component and a trigger pulse disappears, resulting in half-wave output can cause The three-phase current serious imbalance, which is very unsafe. If the relevant materials haven’t been exploited yet, there will be no chance for we to see some new types of china laser pointer.