Weak current College】 【total stage lights twinkling voltage rise time how to avoid burning of audio.

To put the audience into a specific art scene, a perfect performance, avoid the frequent switching of stage lighting. Sometimes, in dance, Opera, drama, Opera, concerts, musicals and other forms, in order to complete the performance requirements of the plot, you need to light art modelling treatment, suddenly surface light, light of light, side column together with cut off, leaving me to chase the light effect.
When at the same time cut off so high power light, the wink reverse peak pulse voltage is high, then the sound system of power supply voltage might instants rise to about 280 v. This high voltage pulse power supply on audio equipment causing serious damage, sometimes the sound equipment of the fuse blow. If the sound system of the protection system is not responsive, you can burn audio equipment in the circuit. Therefore very heavy losses.
Because voltage instability caused by the burning of audio sometimes, in fact, there are several ways to avoid this from happening. The following editorial is combined with the performance of some experience, recommend to all my friends a few simple and easy tips to help you eliminate the performances of the small obstacles.
First of all, the most simple way is the sound system of power supply and lighting system separate from the use of power, straightforward terms, is to let them have their own independent power supply that don't interfere with each other. The so-called independent power supply, voltage source of voltage or current source of current is not affected by the detection tester for electronic circuit control independent of power supply. That way, independence of the electric meter, independent fuse, independent electrical wires, "independence and supply most of the" pure "power to audio equipment. The advantage is obvious, to avoid the other non-audio equipment (such as fluorescent tubes, etc.), releasing unwanted sound system performance of power supply noise. Although this is the safest method, but for now, most of the venue of light are all using three-phase, it is difficult to achieve independent power supply requirements.
However, you can also use automatic voltage regulators to address this challenge. Automatic voltage regulators, and its structure by contacting auto voltage regulator, servo-motor, automatic control circuits, etc., when the voltage instability or load change, automatic sampling control circuit signals drive servo motors to adjust the auto voltage regulator carbon brush, so that the output voltage adjustment to the ratings and to stabilize. In providing sound system of power supply with a 2-3 kW of automatic voltage-stabilized source, and then under sound system's power to choose automatic voltage voltage of load capacity. Thus ensuring sound system power is in stable employment status. However, the regulator is based on the audio system's overall load to choose, because each time the performance group with in different ways, regulators are not static.
The third approach is to prepare a manual pressure regulator. Having regard to some of the region's electricity consumption is relatively large, when in electricity peak voltage may not reach the standard voltage. If at this time the audio Division has a voltage regulator, the sound system of power supply voltage modulation 215 v best. Because when the supply voltage is less than 180 Volt, sound mixer and sound equipment for automatic voltage regulator system loses control and hum. In addition, the use of manual pressure regulator has another advantage, that is, stage lights, before switching to lower supply voltage, located about 180-190 v. When the stage lights cut off, the power supply instant rise 50-60 volts, the sound system of power supply voltage of no more than 240 volts. When the stage lights switch complete, sound engineer and sound systems of power supply voltage is restored to normal range. But generally not recommended for normal audio ' by using this method, because manual pressure regulator control necessary very skilled, in the event of a malfunction or adjustment is not accurate, the sound system causing other damage.
Finally, to tell you a little trick, in General, the sound system's normal operating voltage is 220 volts, and less than 10 volts is the normal operating range, it is recommended that the performance, the use of the power supply voltage to about 215 v, which is slightly lower, this will avoid the instantaneous pulse voltage on audio equipment damage. Voltage lower, probably not much, but once the high, it will burn the audio. Also remind you that if a firing sound phenomena, to professional audio repair Department preclude fault, not your own post to find the cause.