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Gunther Schadow
  • Member for 2 years, 9 months
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13 votes
4 answers
4k views

Why in the world would the tab on a TO-220 package have a connection to anything (but GND, if applicable)?

7 votes
2 answers
3k views

How should I deal with KiCAD Electrical Rule Check warnings?

3 votes
3 answers
374 views

Level transformation 0/+5 V TTL logic to +/-9V how to maximize gain and frequency range (DC to 4 MHz)

2 votes
1 answer
201 views

How do I use the Z-input on my oscilloscope (full range of contrast / brightness)?

2 votes
1 answer
512 views

LTspice simulation doesn't work, what am I doing wrong?

2 votes
3 answers
422 views

Why does my crystal resonate at 4 times the specified frequency?

2 votes
3 answers
104 views

What can I do to get a stable bias on this current sink?

2 votes
1 answer
343 views

How can a 74LS76 JK Flip Flop's outputs Q and Q-bar not be fully complementary?

2 votes
2 answers
319 views

Can Bruce Abbott's inverting TTL to +/- 12V level shifter be improved to better frequency response and better matched impedance?

1 vote
2 answers
258 views

Wired AND, OR gates and compatibility with TTL/CMOS fan-out?

1 vote
0 answers
1k views

LTspice - how to simulate real TTL gates?

1 vote
2 answers
131 views

A sawtooth oscillator breaks down at higher frequencies

1 vote
2 answers
78 views

Any chance to build a dual 2-to-1 line selector/multiplexer from a single chip?

1 vote
2 answers
257 views

Can you get "raw" TFT display panels where you drive the gate and drain lines directly?

1 vote
3 answers
154 views

Amplifier power problems, power supply limitations, or end stage base current draw

1 vote
3 answers
139 views

Is there a TTL or CMOS shift register chip which has an output pin telling you when it has shifted out all (8) bits?

1 vote
2 answers
140 views

FETs or NPN transistors open at 0V at base in CircuitLab or is something wrong with my circuit?

1 vote
1 answer
111 views

I have a hardware-only Conway "Life Machine", is that interesting? [closed]

1 vote
2 answers
716 views

What would be the simplest BJT based *linear* ramp generator?

1 vote
1 answer
126 views

3-to-2 line encoder (or generally 2^(n-1)-to-n) -- not priority, but telling how many inputs are on?

1 vote
1 answer
156 views

How can I generate overflow condition from a 74'283 or 74'181 adder without an output pin of the carry-in of the MSB?

1 vote
0 answers
52 views

A bus routing puzzle, does it ring a bell?

0 votes
4 answers
584 views

What happens if a voltage regulator is driven with input voltage a lot higher than nominal output?

0 votes
2 answers
125 views

What was the point of an "alignment scope" like Kikusui 5091, and can anything be done about it's dismal horizontal bandwidth?

0 votes
1 answer
160 views

Differences between ripple counter (e.g. 74LS161) and CMOS 4040

0 votes
1 answer
289 views

Is it common for such basic TTL gate chips as 74LS32, '08, and '86 to be broken? [closed]

0 votes
3 answers
180 views

Can someone explain the mysterious non-behavior of the DAC0808 and DAC0832, is there a difference between them on the output side?

0 votes
0 answers
284 views

LTspice and TTL logic gate parameters, my edge triggered ramp generator is current starved? How to correctly estimate TTL gate impedances?

0 votes
2 answers
234 views

I need diodes to build a R-2R ladder DAC from original TTL chips (not Arduino) don't I?

0 votes
1 answer
77 views

74LS652 shows peculiar glitching behaviors, what might cause this and how can I prevent this?