hi everyone,
my friend just found out that his ignitor chip for his sr20 is dead. he has tried looking for z32 as well as q45 ingnitor chips and has come out empty handed. he is in the hole right now so he cant really just go out and buy one. since i have electronics background, i was wondering would it be possible to just build one from a schematic? if this is possible does anyone know where i can get a schematic of this part?
thank you
Sasha G.
sr20 ingitor schematic?
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s13sr20chris
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s13sr20chris
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s13sr20chris
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s13sr20chris
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the ignitor circuit uses hi power transistors to energize the primary side of the ignition coils. just think of them as relays with no moving parts. [not really, but it explains them without getting into the whole base, collector, emitter, thing. unless you really want to get into it] basically it fires the coils without the ecu having to handle the current.
in a dc-ac inverter, there is circuitry that produces a square or sine wave in the dc input current, in order for the current to be stepped up by a transformer. you need ac current in a transformer, not dc. just like in an ignition coil, the spark is produced when the power is removed from the primary coil, causing the magnetic field to collapse, and producing the hi voltage arc across the electrodes of the spark plug.
in a dc-ac inverter, there is circuitry that produces a square or sine wave in the dc input current, in order for the current to be stepped up by a transformer. you need ac current in a transformer, not dc. just like in an ignition coil, the spark is produced when the power is removed from the primary coil, causing the magnetic field to collapse, and producing the hi voltage arc across the electrodes of the spark plug.
hey, we'll get into it for the hell of it, i feel like typing.
in a transistor, there are three layers so to speak. PNP or NPN.
the way the transistor operates, is that it can act like a miniature amplifier, or a switch.
the collector and the emitter are the outer parts of the transistor. as long as there is no current flowing from or to the base, the transistor is non conductive.
this is where npn, pnp comes into play.
in an NPN transistor, when electrons are allowed to flow into the positively charged base, or center, of the transistor, it becomes conductive, allowing electrons to flow from the collector to the emitter, completing a circuit.
it these properties that allow a small amount of current to control a larger flow of current.
in a pnp transistor, its the opposite. allowing a small amount of current to flow FROM the base, will allow the larger current to flow through the transistor.
also, it is linear in its action, to a point. very small current variations from the base can cause varying degrees of resistance across the collector emitter, until a point when the base current is sufficient so its resistance across the collector emitter its minimal.
in a transistor, there are three layers so to speak. PNP or NPN.
the way the transistor operates, is that it can act like a miniature amplifier, or a switch.
the collector and the emitter are the outer parts of the transistor. as long as there is no current flowing from or to the base, the transistor is non conductive.
this is where npn, pnp comes into play.
in an NPN transistor, when electrons are allowed to flow into the positively charged base, or center, of the transistor, it becomes conductive, allowing electrons to flow from the collector to the emitter, completing a circuit.
it these properties that allow a small amount of current to control a larger flow of current.
in a pnp transistor, its the opposite. allowing a small amount of current to flow FROM the base, will allow the larger current to flow through the transistor.
also, it is linear in its action, to a point. very small current variations from the base can cause varying degrees of resistance across the collector emitter, until a point when the base current is sufficient so its resistance across the collector emitter its minimal.
ivory, all the above semms accurate, at appears to be a great summary.
however,ECE 205/206 really killed electronic circuits for me. ... anything resembling a mosfet makes me want to punch someone in the face.
silicon, doped or undoped, can kiss my mechanical engineering @$s.
in a totally unrelated note, ivory, since it appears we are slowly approaching silicon's material limits for the smallest transistor, what do you think will be the medium of delicate circuitry in the future?
I know an extensive amount about materials, excluding semiconductors. some CS guy posed that question to me, and I didn't really have an intelligent answer...
just wondering..
however,ECE 205/206 really killed electronic circuits for me. ... anything resembling a mosfet makes me want to punch someone in the face.
silicon, doped or undoped, can kiss my mechanical engineering @$s.
in a totally unrelated note, ivory, since it appears we are slowly approaching silicon's material limits for the smallest transistor, what do you think will be the medium of delicate circuitry in the future?
I know an extensive amount about materials, excluding semiconductors. some CS guy posed that question to me, and I didn't really have an intelligent answer...
just wondering..
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Q45tech
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- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Luckily there is no need for car to operate at 3 Gigahertz.......32 megahertz is plenty fast enough for ecu/airbags/datalogs, etc
The 90-95 ecu ran at 8 Mhz.
7 years ago they thought:http://www.byte.com/art/9604/sec7/art1.htm
Then 2 years ago:http://gtresearchnews.gatech.e....html
Now:http://www.eetimes.com/semi/news/OEG20031202S0016
Don't worry we will have 30 Gigahetz desktop computers in the near future!"the fastest supercomputer in the world remains the Earth Simulator built by NEC and installed last year at the Earth Simulator Center in Yokohama, Japan. It retained its No. 1 position with a performance benchmarked at 35.9 teraflops, or 35.9 trillion calculations per second."
"Intel said Thunder should be operational in January and should clock in at about 20 teraflops. The system will contain 3,840 Itanium processors and Intel believes it will be the world's second fastest supercomputer"............and it only cost $20 million instead of the $600 million for the NEC.
The 90-95 ecu ran at 8 Mhz.
7 years ago they thought:http://www.byte.com/art/9604/sec7/art1.htm
Then 2 years ago:http://gtresearchnews.gatech.e....html
Now:http://www.eetimes.com/semi/news/OEG20031202S0016
Don't worry we will have 30 Gigahetz desktop computers in the near future!"the fastest supercomputer in the world remains the Earth Simulator built by NEC and installed last year at the Earth Simulator Center in Yokohama, Japan. It retained its No. 1 position with a performance benchmarked at 35.9 teraflops, or 35.9 trillion calculations per second."
"Intel said Thunder should be operational in January and should clock in at about 20 teraflops. The system will contain 3,840 Itanium processors and Intel believes it will be the world's second fastest supercomputer"............and it only cost $20 million instead of the $600 million for the NEC.