CircuitShepherd @CircuitShepherd
Realtime electronic circuit optimizer app for iPhone, iPad & Mac! https://t.co/fg6IuVVaLy Random circuit tips & puzzles on this channel :) circuitshepherd.com Austria Joined January 2022-
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Which switch would damage the circuit if opened? S1, S2 or S3?
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How to design any second order passive RC-lowpass (PT2) in seconds: 1. Select the “second order RC lowpass” template. 2. Select the voltmeter. 3. Adjust the “f [Hz]” to the desired 3dB corner frequency. DONE!
Once a little learning curve is passed, CircuitShepherd reveals a new art domain where you can explore highly efficient ways to design analog electronic circuits!
Pro Tip: DC-sweep plots also support a resistor's value as input. Just select the resistor as input in the plot properties!
Since its release, CircuitShepherd has received some significant feature upgrades, which are not shown in the video tutorials!
Insider Note: CircuitShepherd is a hardcore one-man side hustle project by an electronics engineer who got tired of manual parameter tuning in LTspice ;)
Pro Tip: DC-sweep plots also support a potentiometer's alpha as input. Just select the potentiometer as input in the plot properties!
Pro Tip: If you need an arbitrary amplitude and/or phase for your AC stimulus, voltage-controlled voltage/current sources are the way to go!
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@CircuitShepherd I have no idea what you are even talking about but I want to know which one is correct.
@CircuitShepherd S1 -> T1 closes -> LED turns off S2 -> LED turns off S3 -> R2 limits the current to T1 to 2.4 mA. Assuming an amplification factor of T1 of 10 the LED gets around 24mA... Though R1 reduces this a bit... Seems to be good enough for me...
Zopákneme středoškolskou elektroniku?
Which switch would damage the circuit if opened? S1, S2 or S3?
transistor2 is without resistor, why?
Which switch would damage the circuit if opened? S1, S2 or S3?
@CircuitShepherd S3. Opening S3 allows R2 to cause T1 to slam on, resulting in approx 100mA running thru the LED. Most LEDs would burn up. 100mA is also the absolute max Ic for say a BC546 NPN. A 3904 would be okay with 200mA absolute max Ic. R1 would also be dissipating over 2W...
E no fit ever better for circuit analysis.
Which switch would damage the circuit if opened? S1, S2 or S3?
@CircuitShepherd I used almost that exact circuit as an 'idiot resistant' logic indicator circuit for first year electronics students. In several year's worth of classes, I have yet to find one that got damaged by a student error.
@CircuitShepherd These captchas are getting excessive.
@CircuitShepherd Opening S3 will cause T1 to saturate, putting over 100mA through the LED. More than 5 times the maximum allowable current.
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