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johnfound
  • Member for 8 years, 10 months
  • Last seen more than a month ago
24 votes
Accepted

Why don't relays incorporate flyback diodes?

22 votes

What is Copper Thieving and why use it?

14 votes

BJT in Reverse Active Mode of Operation

12 votes
Accepted

AVR: overclocking ADC

12 votes
Accepted

Low power, seven segment display

10 votes

What are the smallest microcontrollers?

10 votes
Accepted

Reasons not to fill unused board area with power planes instead of ground planes?

9 votes
Accepted

How can this FM transmitter modulate?

9 votes

How can I measure the frequency of a watch crystal using my oscilloscope?

9 votes
Accepted

Can the terminal voltage of a lead acid battery be reversed?

8 votes

How to build an interesting XOR circuit with my child's electronics kit

6 votes

Driving high and low inputs of a MOSFET driver with a single PWM signal

6 votes
Accepted

Networking options for multi-node Star topology

6 votes
Accepted

Best way to reduce battery consumption for LED device?

6 votes
Accepted

AVR:LDI instruction

6 votes

Why wavelength is not measured with a unit of time?

5 votes

How do i find nichrome temperature

5 votes
Accepted

How is a sine wave created by an oscillator?

5 votes

Can two devices share a decoupling capacitor?

5 votes

Does opto-isolation matter when there's only one power supply?

5 votes

What is wrong with this simple SMPS?

5 votes
Accepted

Why have atx power supplies need selector voltage?

5 votes
Accepted

Electrically conductive thermal paste

5 votes

How does flux work, chemically, and what are the products?

5 votes

Using an Opto-Isolator to change an Op-Amp's Amplification

5 votes
Accepted

Calculating LED current flow in a parallel circuit

4 votes
Accepted

Using ATtiny ADC with a system clock of 32.768 kHz

4 votes
Accepted

Frequency of astable multivibrator built with inverters (NOT gates)

4 votes
Accepted

Which part of PCB circle for capacitor is positive?

4 votes
Accepted

Run a 5VDC 0.2A fan from a 24VDC 3.75A power supply - Help Needed

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