Before air time, “Propeller Clock” projects I shared in this project control and mode selection can be achieved in both analog clock and digital clock view modes control for the Sony control protocol used control floor Atmel AT90S2313 microcontroller available (16MHz) logout the LEDs (18 LEDs) to drive ULN2803 RES pin AT90S2313 has also been used in the MC34064 is used in the integrated low-voltage detection for use with battery guess how necessary a kind of protection do not know …
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Published: 2011/11/19 Tags: avr project, microcontroller projects
Regulator 7805 with Fan control
Occasionally some PC power supplies I’ve seen a different fan control circuit usually transistor circuits are used , but in this circuit 7805-5 volt positive regulator IC 1 7v zener 1 x 470 ohm resistor and 3k NTC used logic simple first voltage amplification phenomenon Let me tell you though 78xx , 79xx series and similar regulators known in anything but those who do not have the regulator in the chassis leg as a sort of setting end can be counted but only for an upgrade available so 7805 output zener or regular diode can be upgraded with , but not down- that’s logical fan -tested Meanwhile, thanks to 470ohm zener connected to the 5v output to be slightly higher outside the NTC is provided