D. Patrick's user avatar
D. Patrick's user avatar
D. Patrick's user avatar
D. Patrick
  • Member for 8 years, 3 months
  • Last seen more than 1 year ago
4 votes
2 answers
8k views

How many watt-hours in two AA cells?

4 votes
3 answers
7k views

Why drive a relay with a transistor switch?

4 votes
1 answer
718 views

Why did KiCad merge my pins into one open blob in the solder mask gerber?

3 votes
0 answers
224 views

Is a single Schottky diode adequate to support power-path in a basic USB -> LiPo charging circuit?

3 votes
1 answer
6k views

How does base resistance affect a transistor?

3 votes
1 answer
870 views

Does capacitor package size matter?

3 votes
1 answer
764 views

Why are these LED current limiting resistors so big?

3 votes
3 answers
2k views

How do I know where to put stitching vias?

2 votes
2 answers
387 views

What is the second resistor for in this potentiometer reference circuit?

2 votes
2 answers
237 views

How do I power a board multiple sources including USB without exceeding the capacitance limit on USB power?

2 votes
2 answers
599 views

What could cause my boost converter to output below its nominal voltage?

1 vote
1 answer
485 views

How can I isolate an ATTiny from an I2C slave so ICSP will work?

1 vote
0 answers
81 views

Can I use two AD623 instrumentation amps on one shunt to cover broader current range?

1 vote
2 answers
125 views

Does this circuit adequately represent the thermal considerations for a boost converter?

1 vote
1 answer
1k views

How do inductor specifications impact their effectiveness in a boost converter circuit?

1 vote
2 answers
103 views

Can I use this inductor in my boost converter circuit?

1 vote
2 answers
357 views

Is this a valid configuration for decoupling capacitors on an IC with two supply pins?

1 vote
1 answer
77 views

How do current and voltage relate to load?

1 vote
3 answers
2k views

What is the purpose of a resistor network?

1 vote
2 answers
1k views

How can I isolate voltage dividers so they aren't interfered with by other parts of the circuit?

1 vote
2 answers
1k views

Do I need decoupling capacitors when I'm PWMing an LED?

1 vote
1 answer
393 views

Do I need ESD protection on a USB port used for power only?

0 votes
1 answer
146 views

How do I maintain ICSP functionality?

0 votes
1 answer
543 views

Should I spread the pads out on the footprint of a THT LED?

0 votes
2 answers
906 views

Can I connect Arduino ground to the negative terminal of a battery?

0 votes
3 answers
556 views

Understanding power dissipation by LDO regulator as it relates to battery life

0 votes
1 answer
99 views

How do I determine the capacitor to use when converting current to voltage?

0 votes
2 answers
283 views

Why did Adafruit pick a 10K resistor for this phototransistor breakout?

0 votes
1 answer
689 views

Easiest (or cheapest) way to get both 5V and 3.3V on one circuit

0 votes
1 answer
154 views

How do you add an onboard ISP for an ATTiny85?