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A transistor is a semiconductor device that can amplify signals and switch power. The types that are used most are BJT (Bipolar Junction Transistor), UJT (Unijunction Transistor), and MOSFET (FET, for Field Effect Transistor).

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2 answers
258 views

Signal generator, DC offset, impedance into an open load - workarounds?

I wish to use this to do some tests with MOSFETs and transistors. How can I apply a DC offset to raise the voltage to a level in which I want to experiment with, say 10 volts? 2 volt sine wave pk-pk. …
Jeffrey Edward Messikian's user avatar
1 vote
1 answer
893 views

Help with BJT Transistor analysis. The amplified waveform is more like a square wave any nee...

I have been exploring BJT transistors and implemented a common base amplifier. I connected a signal generator to the voltage source labelled V2 in the below schematic. …
Jeffrey Edward Messikian's user avatar
0 votes

NPN Transistor Parameter Determination Gain Question

After some digging I found that the following link helped me out the most. http://www.electronics-tutorials.ws/amplifier/emitter-resistance.html In particular, the article describes the gain of the …
Jeffrey Edward Messikian's user avatar
1 vote
1 answer
161 views

NPN Transistor Base Current Calculation from Beta, Vth, and Rth

In this answered question regarding a common emitter NPN Transistor.... NPN Transistor common emitter calculation I am struggling to understand the section "Assuming Active Mode" Specifically, in the …
Jeffrey Edward Messikian's user avatar
2 votes
3 answers
382 views

NPN Transistor Parameter Determination Gain Question

In the interest of making an oscillator, I made the above circuit after reading about gain, current flow, active region, and how an NPN transistor works. I then put the circuit in LTSpice and n …
Jeffrey Edward Messikian's user avatar
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0 answers
159 views

Faulty PNP Transistor switch fix...what is causing the noise on the base?

I am wondering if the transistors I have been using are flawed or the resistors are bad? …
Jeffrey Edward Messikian's user avatar