| 摘要 |
<p>PURPOSE: To realize stabilized power supply by outputted the digital output of a microprocessor as analog voltage through a level shifter and the network of load resistance. CONSTITUTION: The microprocessorμP, a level shifter block LS driven through the logic output gate ofμP and the network R, R/2...R/128 of load resistance, which is connected to LS, are provided. A unitary gain voltage amplifier B is connected to the network. The stabilized supply A receiving input from the amplifier B in a control terminal C is connected to the amplifier B. Indicator LED is connected toμP. TheμP has a programmable memory sufficient for constituting a D/A converter generating voltage which starts from a zero value and boosts to a value which is preliminarily set through the level shifter and the network of load resistance at any time after black out.</p> |
