The working principle of stage lighting controller
A general plane, proscenium light ears box (gallery), remote light room.According to the scale of the theatre stage, the 1. sides have a face light, two lines of light, and even three lights. The configuration of the surface light lamp should be based on the distance between the different distances, the configuration of different sets of spotlights, imaging lights, and its power should be more than 2KW. The first light from the proscenium is near, can also add some 2KW rib lamp, lantern. A surface light and two light on the left, and the right position should be added for the allocation of focal length, suitable for light lamp power, by staff to control the light brightness and color change etc..2. face on both sides of the symmetrical proscenium theater stage set, according to the size of each side face a road or two configuration, lamps, dominated the spotlight, a small amount of configuration imaging lamp, lamp, because the face on the rib side wall close to the auditorium, the use of rib light, diffuse light often near the wall shone bright, some scenes of the atmosphere, so should be less is better. About each face should light up a set for arbitrary control personnel tracking.3. feet in the light on the outer edge of proscenium Orchestra, set foot light bad, built-in light color control color light, its length is slightly less than the width of the stage.4. remote light room, usually in the auditorium side around each set, equipped with gas discharge lamp such as xenon lamp, all operated by the light control personnel, if not set up a dedicated light room, often in a gallery on both sides of back light up a bit.5. boxes (gallery) light, according to the situation in the theater box (a) left, right, set the lamp configuration spotlight several, if conditions do not permit, and can not be arranged.
The stage light controller works as follows:The control part is composed of ICl555 integrated time base circuit, photosensitive resistor RL, R2, W1, W2, C4, C5 and so on. The working principle of the 555 integrated time base circuit is known. The strong light shines on the RL when the low resistance, and the potential of ICl the foot rise. If V6 = V5, V2>1/2V5IC13 pin output is low level IC2 and VTl working voltage of LED2 is not bright, optocoupler SCR IC3 not conduction. The CJ1 wire package has no pull current, the contacts are in disconnection, the external circuit is not working, and the light is not on. When the night falls, the RL shine becomes weaker and weaker, and the RL impedance is also increasing. When the 5 pin voltage V6lCl decision 555 trigger potential V7 and threshold potential V6 and satisfy the following relations: V5=V6=2V2 is usually in a good light at W1 (W3) V2>1/2V6o4 for "0" <0.7V "O the end". Connect the power supply when not in use. 5 feet plus a potentiometer, W2. can change the V fir, and change the threshold level V6 trigger level V2, VD5 role is to cut off the battery to the IC4 power supply channel during the power outage to reduce battery loss and extend the working time of IC2.
