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Discussion in ‘ General Electronics Chat ‘ started by hpOct 18, Why can’t I swap emitter and collector? Oct 18, 1. Nov 23, 2, If an NPN transistor is just a layer of P type material between two N types why can’t I swap the emitter and collector in a datassheet

2N Datasheet pdf – Trans GP BJT PNP A – New Jersey Semiconductor

I remember doing this with some JFETs, source and drain could be swapped. Oct 18, 2.

Oct 2, 17, 5, Because the two junctions are not symmetrical. The doping concentrations at the base-emitter and base-collector junctions are very different. It is explained right here on AAC: Oct 19, 3. Oct 19, 4.

Why can’t I swap emitter and collector?

May 2n1350, 1, Oct 19, 5. Jun 24, 11 2. All responses before me seem to achieve 2n13005 which be to elucidate transistor operation. But, to help even further, if I could, I say transistors are like a water pump, in the sense they have pre-conditions to work think about when you invert lids you impede they work like project itself was thought and, either, in correct current flow.


To clarify even more, you can read this articlefrom T. Oct 19, 6.

Jul 18, You can swap emitter and collector leads in a junction resistor. The swapped circuit has much less gain because the target is so small, dattasheet the collector offset voltage is very small.

Before the advent of FETs, inverted transistors were often use to reduce offset. Robin Mitchell and GopherT like this.

Datasheet Page 74, pdf datasheet & application note

Oct 19, 7. Oct 19, 8. Mar 2, 2, 2, Oct 19, 9. Apr 24, 7, 1, With a real world bipolar transistor you actually can swap the C and E and it will still work as a transistor, albeit with a much reduced gain of about one.

The input stage of evert TTL gate works in this mannor, so there are real applications for this. Ratasheet 19, Mar 14, 20, 5, Some of the first commercial transistors were fairly symmetrical and would work nearly the daatasheet in the inverted configuration as the normal one.

Sep 16, My understanding and test results show that jfets are still often times symmetrical. The drain and source can be swapped with no adverse effects usually. Some datasheets even say they are symmetrical. I know that its a different transistor type than asked about Aug 27, 4, 5, How well swapping works depends on the manufacturing process, with older usually meaning datawheet.


Bipolar diffusion IC process. Bipolar implantation IC process.

They datadheet rugged, radiation resistant devices. I repair antique auto radios, and almost never have to replace a tube. I flew as radar tech is a super constellation in the late 50s, full of tubes, but the biggest failure item was the circuit boards not the tubes. Why can’t I fix my own titles? Posted by spinnaker in forum: Why can’t I post pictures Posted by tindel in forum: Why can’t I convert 10mV voltage 2nn1305 Thermocouple to current and measure it?

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