Free circuit schematics - wiparat.com

This is a challenge contest circuit sensitivity, in press. Can be played simultaneously by up to 4 people on one hit before, there are bright lights show the number of people who are pressing.
When raising the power supply circuit, and switch to either one up.Suppose that the first switch S1, a current will flow through [...]

This circuit designs for control DC Motor 12Volt. By use the touch once Motor as a result turn go to once. When use a finger touches the metal makes Schmitt Trigger Circuit take a signal from Oscillator Circuit and make a signal goes out Trig SCR Bias Current the DC Motor 12V then turn follow [...]