2N3819 | Electronic Project Circuits

Posts Tagged ‘2N3819’

Basic Timer using FET 2N3819

This circuit be Basic Timer Circuit by use important equipment is FET 2N3819. By this circuit can can delay long ago arrive at 1.5 minute. Stand S1 at a position Reset an electric bell will loud. Totter S1 come back at time an electric bell will silent until time drag will stop electric bell talk at one time again. If friends enhance the value C1 or R1 for delay long ago go up. devalue R2 while stay in a position Reset for Reset fast go up. Request friends have fun Basic Timer Circuit , please sir.

Be the first to comment - What do you think? Posted by admin - September 8, 2008 at 8:51 pm

Categories: Timer Tags: 2N3819, timer alarm, timer clocks, Timer Switches

Electro meter by FET 2N3819

Today we try to come to see the circuit checks the static electricity is simple. OR Electro meter by FET 2N3819. It can show the electricity bill dwells to follow the inventory that has the electric charge. Such as the plastic is , hand , etc. By detect far get 30 centimeter. Fine the value R1 give the meter can read the value 1mA. When lead load come to near an antenna very a little ? The value will that can read to is down in proportion. Request a friend has fun Electro meter Circuit this please sir.

Be the first to comment - What do you think? Posted by admin - September 4, 2008 at 9:48 am

Categories: Meter Tags: 2N3819, Meter

Audio Mixer by FET 2N3819

This circuit be Audio Mixer Circuit by FET 2N3819 numbers, build easy and the a little equipment. By this circuit lets to use the microphone since two go up or use other tool all right wasp suit amplifier same microphone. The R1 and R5 will control value reduction input each beside. Thus R1 , and , R3 be the controller equilibriums.