Electronics

Simple Latch MOSFET

Example

Exaple+Load

Another Example

More

moar2

touch protection

touchp2

SCR based test

Pull down to voltage 5 volts

http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+50%0AR+128+176+64+176+0+0+40+12+0+0+0.5%0Ar+224+256+224+176+0+1000000%0Ar+224+256+304+256+0+200000000%0Ad+224+256+224+320+1+0.805904783%0AO+304+256+368+256+1%0AR+224+320+64+320+0+0+40+5+0+0+0.5%0As+128+176+176+176+0+1+true%0Aw+224+176+176+176+0%0Ag+304+320+352+320+0%0Aw+224+320+256+320+0%0Ar+256+320+304+320+0+100%0Ag+288+176+352+176+0%0Ar+224+176+288+176+0+100000%0A

Resister Ladder

[1]

Basic Resistor Ladder

reversed

Ladder +12v input

Complete

complete

Negative voltate

http://www.allaboutcircuits.com/projects/build-your-own-negative-voltage-generator/