This page is a page of things I may need when I am away from home, pictures, drawings, data sheets, whatever.....
You might find something interesting here, and you might not, cruise at your own risk :-)
RAILFAN GUIDES HOME
RAILROAD SIGNALS HOME
10 LED Sequencer with a 555 and 4017
Notice that by placing the LED where the resistors are, you can get away using only one series limiting resistor for all 10 LED's.....
And there should be a 10nf cap on pin 5 to ground.
120VAC LED Voltmeter and Current Meter
Documentation poor, not sure where to connect input voltage, and what voltage it should be, or if it is the voltage you are measuring....
PWM Speed Controller: 5-35VDC, 5A
Documentation: None. But connections easy to figure out because the PC Board is well marked. Did not come with mounting nuts!
AMS-1117 Power Supply Module Socket Board
Last Modified 31-Mar-2018