A litle transistor help? - Electronic Circuits Projects Diagrams Free

Someone Electro · 28th October 2003, 05:59 PM

Weel im saveging parts from circuits(like most of you do).

And got a circuit vith a vhole bunch of transistors(strange)

Like on a transistor seas:
MPS
A92
E B C

Like can someone explane this code?

And i think i got a transistor width curent limeting!
I like i got the diode to flash for a milisecodnd wen i aply curent to base.
But wen i use a ristor over base it stays on!!!(not shure whare is B E C)

crust · 28th October 2003, 06:06 PM

That is an MPSA92 PNP high voltage transistor. With the flat side facing you, the pins are emitter, base, collector.

Someone Electro · 28th October 2003, 06:31 PM

Yes thats right i tryd to shearch for MPS_A92 vith Yahoo.

Woow is this transistor faimos!(i wish i cod be that faimos :lol: )

PS:
To bad it only suports 100 mA but 300 V is a wow

mozikluv · 29th October 2003, 03:30 AM

hi,

you are trying to have this transistor to function like a switch right? you need another PNP transistor to drive that transistor and use a timer ic to make the led flash on & off.

Someone Electro · 29th October 2003, 05:52 AM

Its normaly wired

But wean i run curend in the base(directly)the LED maces a flash(1 ms long)but wean i put a resistor ower the base the LED stays on!

I think if run to much curent i the base and the transistor has a ower load shut down

PS:
Im not tying to mace a LED flasher!:?

If I wanted so then i wod write:
I want to build a LED flasher and i dont know how.

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28th October 2003, 05:59 PM	(permalink)
Someone Electro	A litle transistor help? Weel im saveging parts from circuits(like most of you do). And got a circuit vith a vhole bunch of transistors(strange) Like on a transistor seas: MPS A92 E B C Like can someone explane this code? And i think i got a transistor width curent limeting! I like i got the diode to flash for a milisecodnd wen i aply curent to base. But wen i use a ristor over base it stays on!!!(not shure whare is B E C)

28th October 2003, 06:06 PM	(permalink)
crust	That is an MPSA92 PNP high voltage transistor. With the flat side facing you, the pins are emitter, base, collector.

28th October 2003, 06:31 PM	(permalink)
Someone Electro	Yes thats right i tryd to shearch for MPS_A92 vith Yahoo. Woow is this transistor faimos!(i wish i cod be that faimos :lol: ) PS: To bad it only suports 100 mA but 300 V is a wow

29th October 2003, 03:30 AM	(permalink)
mozikluv	MPSA092 hi, you are trying to have this transistor to function like a switch right? you need another PNP transistor to drive that transistor and use a timer ic to make the led flash on & off. __________________ \"NONE BUT THE BRAVE DESERVES THE FAIR\" ~Shakespeare~

29th October 2003, 05:52 AM	(permalink)
Someone Electro	Its normaly wired But wean i run curend in the base(directly)the LED maces a flash(1 ms long)but wean i put a resistor ower the base the LED stays on! I think if run to much curent i the base and the transistor has a ower load shut down PS: Im not tying to mace a LED flasher!:? If I wanted so then i wod write: I want to build a LED flasher and i dont know how.