Circuit work principle
DC Dual Crop Electronics Electronic Cutting Turning Circuit See Figure 1, composed of rain control, optical control, high voltage grid, blue light, white light, and drive and exchange, DC power supply, etc. The driving circuit of the lamp H is composed of TWH8751 and RP2, C3, and RF2 is fed back to the input terminal 1 foot signal from the IC2, and the power switch integrated circuit IC2 is low. Flat, so the circuit complies with the excitation conditions, and the oscillating voltage is boosted by the boost transformer T2, the lamp h is lit. Adjusting the potentiometer RP2 can change the oscillation frequency of the circuit to regulate the luminous efficiency of the lamp tube H.
The high voltage circuit is made into a pulse oscillation circuit, and outputs a high frequency pulse signal. The driving large power tube 3DDL5 is turned on. The secondary induction of the row transformer T3 is induced, and nearly 10,000 DC voltages can be obtained by the rectifier diode output. . Transformer T3 can be used in 14, 17 inch black and white television line output transformers instead of actual use performance. The high pressure package has a silicon reactor that is used as the high-voltage diode VD2 of the circuit. When using the line, the second foot of the high-press package is used, and the 5 foot acts as the primary and fourth pins of the transformer.
On the farmland with the mainstream 220V available AC, close to the switch S, and charging the battery while the work edge. It is very convenient to use a battery or rechargeable battery in the city. This circuit operates from the motion contact K1-1 control lamp of the relay K and the high voltage circuit switch. Rain control, optical control circuit consists of Q wet sensor, RL photosensor, and transistor VTI, VT2, etc. The moisture sensor is actually made of a single-sided copper plate of epoxy, and is scheduted with a knife into two groups adjacent but mutually contactless electrodes. In the case of dry, the electrodes between the two groups of electrodes are infinite. If the rain is wet by water, the two-pole resistance will fall quickly to a few thousand Euro or hundreds of ohm, at which time the triode VTL is turned on, the VD2 is closed, the relay K does not move. The contacts K1-I open, the light, the high voltage grid circuit does not work. Similarly, if the photomethamal RL is illuminated by natural light irradiation, the VTL conduction, VT2 is closed, the light, and high voltage grid circuits are not working. RP1 is adjustment of the working stability of the optical control and the wet sensor.
As long as the Q-Wet Sensor and RL of the Q-Wet Sensor and RL are high resistance, the VT1 is closed, VT2 is turned on, K is electroracted, and the contact K1-1 operation is closed, the lamp, high voltage circuit is powered. The lamp is luminous to induce insects. At the same time, after the boost transformer T2 is boosted, the high voltage grid P1, P2 is added to kill all kinds of pests.
Production and debugging
The Q wet sensor can be used in a single-sided copper plate with a 45mm to 65 mM epoxy resin. The two sets of electrode copper foil spacings are required to be around 3-5mm. The booster transformer uses E12 or U12 ferrite magnetic core, L1 with φo. 8mm high-intensity polyester enameled wire on the skeleton 30, 12 in 0.27mm high strength polyester paint wiring around 160, pay attention to the interlayer to be insulated, the magnetic core is required to be a layer thickness of 0.05mm Thin paper, then make the finished product to dry treatment. The welded circuit board is loaded with the transformer T2 into a suitable insulating small box, and the fixed switch SA is opened on the cartridge. When debugging, the battery or battery is fully charged, and the power switch SA is closed, and the MGA5-type photosensor is blocked by the hand during the day, the lamp is immediately lit, then the fine-tuning potentiometer RP2 makes the lamp hue to the brightest, loose The lamp is automatically extinguished, and the debug is complete.
Preparation of high voltage grids, the lower two plastic round covers the steeled cap, 40cm in diameter (also available in the high-quality plastic round pot), select the appropriate position on the top cover to open a rectangular mouth and a round mouth, easy to install Q Wet sensor and MG45-type photosensitive resistor. In the edge of the plastic circuuli, the upper portion is soldered into a cylindrical shape with a plastic rod having a length of 65 cm, fixed to the edge of the basin.
Then, the grid is spirated from the top onto the cylinder with a galvanized wire or copper wire of φ1 mm. When winding, the two wires are wound together, and the two wire spacings are maintained at 8 mm, as shown in FIG. 2, the typical simulation. Note: Copper, galvanized wire and the plastic rod are heated with a soldering iron, so that the wire is embedded in the plastic rod. To ensure that the wire does not slide and cause a short circuit. Copper, wire spiral wrapped around the plastic basin, and the two wires can be used on the leads of the row output P1 and P2.
warn:
1. DC Dual-use crop electrony insects, surrounding strats, and protective iron locks. Make people livestock when power is powered on (except for managers).
2. Due to the high flow voltage of electron extension lamps, it should be installed in a place with a higher ground.
3. It is recommended that the electronics insects should have a special personnel to keep the child, preventing children from being touched and prohibiting other people from passing around, and there should be obvious signs around the power-on.
4. Thunderstorm weather should be recovered from electronics insects and prevent overall moisture to avoid shortening service life.
5. In order to save electricity, the electronics insects are used to turn off the lights at 12 o'clock. And remove the worms on the grid. The author reminds. When cleaning the grid is positive, the negative pole (the small brush sweep) must be cut off. Prepare for the best pesticut effect when using the next time. Read more
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