Feynman

381 reputation

bio	website	pathintegral.org/blog
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visits	member for	1 year, 4 months
	seen	Jan 14 at 21:48
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	381 reputation	bio	website	pathintegral.org/blog	visits	member for	1 year, 4 months
18 badges		location			seen	Jan 14 at 21:48

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Mar 13	awarded	Popular Question
Jan 22	awarded	Yearling
Nov 15	accepted	What makes an “rf transistor” different from an ordinary transistor?
Nov 10	comment	What makes an “rf transistor” different from an ordinary transistor? Thanks for the response. So how are they so much faster than normal mosfets?
Nov 10	comment	What makes an “rf transistor” different from an ordinary transistor? I added an example datasheet in the first paragraph.
Nov 10	revised	What makes an “rf transistor” different from an ordinary transistor? example datasheet
Nov 10	revised	What makes an “rf transistor” different from an ordinary transistor? one more thing I learned about driving power transistors
Nov 10	asked	What makes an “rf transistor” different from an ordinary transistor?
Oct 22	awarded	Popular Question
Jul 8	accepted	Simple analogue=>pwm circuit with inverting and noninverting outputs
Jul 7	comment	Simple analogue=>pwm circuit with inverting and noninverting outputs Well, I tried audio input, and it there was just a lot of static. Interestingly, when the 10k resistors are replaced with wires, the sound is relatively clear. I suppose I was left with the internal resistance of the op amps. However, the audio quality was still not great.
Jul 6	awarded	Teacher
Jul 6	revised	Simple analogue=>pwm circuit with inverting and noninverting outputs Circuit seems noisy in real life.
Jul 5	answered	Simple analogue=>pwm circuit with inverting and noninverting outputs
Jul 5	comment	Simple analogue=>pwm circuit with inverting and noninverting outputs The op amp is tca0372. The op amps were supposed to just flip the output's sign at a high current. The reason I use an isolation transformer is to ensure I can produce enough current to drive the gate of an igbt. Besides, I use a large autotransformer to supply power to both the logic and the load, so I need to use an isolation transformer at some point to keep the logic side isolated from the gates of the igbts I am switching.
Jul 5	comment	Simple analogue=>pwm circuit with inverting and noninverting outputs Ok, I added a picture and hopefully a better explanation.
Jul 5	revised	Simple analogue=>pwm circuit with inverting and noninverting outputs picture
Jul 5	revised	Simple analogue=>pwm circuit with inverting and noninverting outputs edited title
Jul 5	asked	Simple analogue=>pwm circuit with inverting and noninverting outputs
Jul 2	accepted	Flip flop/latch with isolated differential input and differential output