User Randy

43 votes

9 answers

20k views

How to hold SMD parts in place while soldering?

soldering surface-mount

asked Feb 12, 2015 at 18:45

43 votes

7 answers

27k views

What is the truth about 1.5 V "lithium" cells?

batteries lithium

asked Dec 23, 2016 at 17:44

13 votes

1 answer

1k views

Will this passive non inverting anti-log circuit work?

operational-amplifier audio non-inverting

asked Nov 17, 2015 at 18:21

9 votes

2 answers

5k views

Single point vs Ground plane, in audio OP AMP PCB layouts

operational-amplifier grounding ground-loop

asked Oct 21, 2014 at 15:36

8 votes

5 answers

7k views

Any downside to using a charge pump for an op-amp negative supply

operational-amplifier charge-pump virtual-ground

asked Jan 8, 2016 at 16:37

7 votes

4 answers

11k views

To protect a LiPO cell from undervoltage, how low current is low enough?

protection lipo undervoltage

asked Jan 11, 2015 at 0:52

5 votes

1 answer

108 views

How to properly select a transformer in terms of thermal rise

transformer temperature maximum-ratings

asked Jul 3, 2018 at 3:13

5 votes

2 answers

923 views

Help understanding/selecting SMPS to drive capacitive load

switch-mode-power-supply load capacitive

asked Aug 1, 2018 at 20:54

4 votes

3 answers

260 views

Is there an alternative economical low-voltage reference to a single cell?

voltage-reference battery-monitor

asked Feb 26 at 2:27

4 votes

4 answers

306 views

Help understanding high \$V_F\$ ratings of Schottky diodes

schottky

asked Jul 14, 2016 at 17:54

3 votes

4 answers

1k views

Keeping SMD parts in place while soldering with paste and heat

surface-mount pcb-assembly

asked Jul 1, 2018 at 21:06

3 votes

3 answers

871 views

How to minimize hash noise in amplifier mounted near boost regulator

audio noise boost

asked Jun 10, 2016 at 22:22

3 votes

5 answers

2k views

When should an audio pre-amp use a differential input

audio music low-noise-amplifier guitar-amplifier

asked Jun 16, 2016 at 15:59

2 votes

1 answer

970 views

Compromise needed combining virtual grounds

operational-amplifier audio analog grounding

asked Oct 10, 2014 at 21:32

2 votes

2 answers

479 views

What OP AMP spec should I be checking to assure this behavior

operational-amplifier single-supply-op-amp dc-amplifier rail-to-rail

asked Nov 24, 2015 at 18:58

2 votes

1 answer

2k views

OP-Amp self generated negative voltage from Charge Pump?

operational-amplifier charge-pump

asked Nov 13, 2015 at 16:56

2 votes

0 answers

102 views

Is there any standard (or even a de-facto standard) for TRRS to USB? [duplicate]

usb adapter standard trrs

asked Aug 22, 2018 at 17:47

1 vote

1 answer

62 views

Is thermally conductive epoxy needed if long settling time is acceptable?

thermal insulation adhesives

asked Jun 27, 2018 at 18:19

1 vote

3 answers

3k views

OP-AMP Flip Flop start up predictability

operational-amplifier flipflop

asked Mar 6, 2015 at 20:03

1 vote

1 answer

875 views

Detecting whether a car is running

automotive

asked Dec 5, 2014 at 15:34

1 vote

4 answers

2k views

MOS FET reccomendations for a newbie

mosfet

asked Jan 5, 2015 at 17:58

1 vote

2 answers

245 views

Proper or instinctive design choices for trimpot direction [closed]

trimmer trimpots

asked Mar 20, 2017 at 19:05

1 vote

1 answer

2k views

Is mechanically switching SATA drive signals possible?

switching hard-drive sata

asked May 7, 2017 at 2:07

0 votes

1 answer

182 views

What is the optimal protection diode placement driving a relay

diodes relay transient-suppression

asked Mar 29, 2018 at 18:54

0 votes

1 answer

581 views

Need help choosing options for 12V supply from a Lithium-Ion battery

voltage-regulator audio buck boost 12v

asked Jan 26, 2016 at 15:30

0 votes

3 answers

5k views

How to determine a capacitor value across a switch carrying DC

capacitor switches contact

asked Apr 1, 2016 at 15:53

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26 Questions

How to hold SMD parts in place while soldering?

What is the truth about 1.5 V "lithium" cells?

Will this passive non inverting anti-log circuit work?

Single point vs Ground plane, in audio OP AMP PCB layouts

Any downside to using a charge pump for an op-amp negative supply

To protect a LiPO cell from undervoltage, how low current is low enough?

How to properly select a transformer in terms of thermal rise

Help understanding/selecting SMPS to drive capacitive load

Is there an alternative economical low-voltage reference to a single cell?

Help understanding high \$V_F\$ ratings of Schottky diodes

Keeping SMD parts in place while soldering with paste and heat

How to minimize hash noise in amplifier mounted near boost regulator

When should an audio pre-amp use a differential input

Compromise needed combining virtual grounds

What OP AMP spec should I be checking to assure this behavior

OP-Amp self generated negative voltage from Charge Pump?

Is there any standard (or even a de-facto standard) for TRRS to USB? [duplicate]

Is thermally conductive epoxy needed if long settling time is acceptable?

OP-AMP Flip Flop start up predictability

Detecting whether a car is running

MOS FET reccomendations for a newbie

Proper or instinctive design choices for trimpot direction [closed]

Is mechanically switching SATA drive signals possible?

What is the optimal protection diode placement driving a relay

Need help choosing options for 12V supply from a Lithium-Ion battery

How to determine a capacitor value across a switch carrying DC