Motorcycle ignition circuit diagram

In the experiment, two igniters were dissected and three normal igniters were tested. A common problem was found: there is a diode at both ends of the ignition coil . Why do manufacturers do this? In this way, the negative half-cycle voltage generated by the ignition coil is short-circuited by the diode, the ignition coil will heat up, and the generated voltage will drop.

Test and compare the dissected car after removing the short-circuit diode: the voltage is about 200 volts when the engine is accelerating, and the voltage drop with the short-circuit diode after the accelerator is 60 to 70 volts. The voltage without the shorted diode rises to about 260 volts.

For starting comparison, I just feel that if there is a short-circuit diode, it needs to turn three turns, and if there is no short-circuit diode, it will start after half a turn to one turn. I am currently using an igniter with the short-circuit diode removed. It has been used for more than 8 months, and the starting effect is obviously better especially in winter.

Friends who have experience in this area talk about their experiences!

" The diode prevents the current imbalance from causing the core to be magnetized by the magnetic field generated by DC" is not appropriate to use here.

1. The iron core is soft iron and is always in a magnetic field. 2. After the car is started, the magnetic field changes. 3. The change in the magnetic field produces AC output. It's AC power. 4. What is the difference between AC power supply and DC power supply?

AC power is a power source with constantly changing positive and negative polarities, while DC power is a power source with constant positive and negative polarities. When we analyze AC power in terms of DC positive polarity power supply (positive half cycle) and DC negative polarity power supply (negative half cycle), things will become clear.

What you said about "the iron core is magnetized by the magnetic field generated by DC" may be based on the theory that the iron core has permanent magnetism... so it is not very suitable for use in generators. If it is a three-phase generator, you should pay attention to the three-phase electric load being equal or large. If you use a single-phase electric generator, be careful not to overload it. Of course, the three-phase electric power cannot be overloaded.