Monday, July 19, 2010

Simple TCI (Transistor Controlled Ignition)

Transistor Controlled Ignition

Below here a simple TCI that I've been using on my '94 Daihatsu Charade Classy.




The first transistor function as inverter of voltage level and feed the current to the IGBT input. The type of the first transistor can be replaced as long as the specification were met the need. You may use others like D313, C1067 or many others type of power transistor that available on the market.


Take a note that you must unplug the original capacitor at the circuit breaker and remove it from the wiring, but the capacitor doesn't need to be removed from it's position, just remove the cable.

The IGBT may also be replace at the same or bigger power specification such as QM20H or QM40H are better. You may use other type of IGBT that can be found on the market. You must place a heat sink at the IGBT or mount it on car body since it will sink much power for the coil to ignite.

I had testing it to speed 120km/h and it was stable. I don't know the rpm value since my rpm meter were dead.

This is a simple one, you may assembling it without a PCB, just solder them right at the foot of each component as schematics arrangement. You may find other TCI using microcontroller to compensate timing, but here, my objective is to eliminating the corrosion at the circuit breaker and make it a longer live time.

IGBT
Insulated-gate bipolar transistor or IGBT is a three-terminal power semiconductor device, noted for high efficiency and fast switching. It switches electric power in many modern appliances. I'm using QM15HA-H from mitsubishi which widely use in power switching application.



TIP 31 specification:




If you interesting, you may order me to build it for you, it will cost around 300 thousand rupiah. The expensive ones is the IGBT, I bought a used one at the price of 150 thousand Rupiah, a new one will cost more expensive.

5 comments:

  1. Saya perlu igbt-nya saja, seken juga gapapa, berapa harga sampai Bogor kota tlg imel ke :
    yudiwahyudikartaatmadja@gmail.com
    trims.





    ReplyDelete
  2. Could one use this circuit with a magnetic trigger, instead of a braker?
    Thank you in advance.

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  3. oke makasih .... saya tunggu simple TCI nya

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  4. This design has many issues. When I built it, the BJT didn't even go into saturation as biased (my bad for not doing the appropriate leg work, but others should be warned). Also, is there a reason to rate the 1nF capacitor hooked up to the base for 200V?

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  5. No, sorry, it works! But still, why the 200V rated cap on the base of the TIP31?

    ReplyDelete