If the motorcycle does not cause the traffic accident when the vehicle is turning, it is easy for some drivers to get used to flashing the headlights when the car or the steering is turned to remind the opposite car to pay attention. The author is inspired by the sail type 90 motorcycle. Installed a set of turning strobe lights, which can automatically flash frequently before and after turning. The eye-catching flash can prompt the attention of passing vehicles in time, and the effect is very good.
Working principle: When the flash tube is working, it needs to add DC voltage of about 300V at both ends. If the method of low-voltage oscillation boosting is adopted, the capacity is small, the efficiency is low, and it is easy to malfunction. The author also uses the magnetic diameter of the motorcycle. The 12V AC voltage generated by the motor while the vehicle is running is boosted to about 220V after being boosted by the transformer T1. After rectification and filtering, it obtains a DC voltage of 320V, which is added to both ends of the flash tube and the other passes through R1, R2 and T2. The primary charge to C3. If the steering switch K3 is turned on at this time, the 12V DC voltage causes the turn signal to flash periodically through the scintillator, and the relay J is also periodically pulled and disconnected. When the relay is pulled, the voltage on C3 passes through the relay. The contact discharges to T2, and the secondary of T2 induces a high voltage of a thousand volts to cause the flash tube to avalanche, emitting a bright flash, and C3 is recharged when the relay is turned off. Repeatedly, the principle of the rear strobe is the same, except that the flash time is just offset from the front strobe. Resistors R1 and R4 can limit the operating current of the circuit and protect T1, D1 and D2 from the left and right turn signals. K2 is a manual strobe switch. K2 can be turned on in rainy or snowy days or foggy days. At this time, the four turn signals on the car flash at the same time, and the front and rear strobe lights also start to flash, which greatly improves the safety of driving. Component selection: Step-up transformer T1 should use a good quality single 12V output power transformer, the power should be greater than 5W, the wire diameter of 12V winding should be thick enough, D adopts 1A/700V rectifier bridge stack, trigger transformer, flash tube can It was removed from the flash unit mailed by Zhengzhou Dongming Electronic Store. C1, C2, C5 use 10uF/400V electrolytic capacitor used in electronic energy-saving lamps. If the brightness of the strobe light is not enough, the capacity of C1 and C2 can be increased, but the capacity should not exceed 30uF. Otherwise, the flash is too glaring and affects the driving safety of others. C3 and C4 use 0.1uF/630V polypropylene capacitors. The AC waveform of motorcycle magnets is very poor and contains a lot of spikes. Therefore, C1~C5 should use high-quality capacitors, otherwise it will easily overheat or burst. J should use 12V relay with large contact capacity, using relay as trigger, which is simple and reliable. In the process of production, I tried to use automatic control circuit with thyristor and RC components, resulting in poor reliability. Was abandoned.
The installation of the strobe light directly affects the use effect. The installation cannot damage the appearance of the motorcycle. The front strobe light can be installed in the front position light of the model or installed in the headlight, but the flash should be tilted up to 30. Around the degree, the toolbox on the tail of the motorcycle is usually equipped with a red reflector. Although the internal space is small, as long as it is reasonably arranged, it can be loaded into the rear strobe light. If it is not put down, the storage capacitor can be installed. In the toolbox, there are two advantages to this. The first installation is higher in position and easier to find by the rear vehicle. The second is a red flash that is very eye-catching. The turn strobe light produced by the author has been used for nearly half a year, and the performance is stable and reliable. The unique warning effect has attracted many motorcyclists to envy.
Why do you like to use ferrite magnets? Because it does not rust, does not oxidize, does not corrode and is absolutely environmentally friendly.
Why don't ferrite magnets rust?
The chemical name of ferrite magnet is iron tetroxide. The main components are: Fe3O4. It is already an oxide of iron, so it is very difficult to be oxidized again. Other magnets (the main component is iron) are made of magnetized metal iron or other elements. Like other iron and steel, they can be oxidized and rusted, and the oxidized part will lose their magnetism.
What are the advantages (advantages) of ferrite magnets
1. Low cost, low price. Raw material cost is cheap.
2. Good temperature stability. It can be used in temperatures of -40 degrees Celsius and +350 degrees Celsius.
3. It is just mentioned that it does not rust.
4. The demagnetization curve is approximately a straight line.
5. Light weight, density is (4.6-5.1) X103kg/M3
6. The anisotropy constant of the magnetic crystal is large.
7. Large coercivity Hc (between AlNiCo alloy material and rare earth cobalt permanent magnet material)
8. High resistivity.
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