第1个回答 2010-05-25
All the equipment need stability of the dc power supply. But general dc voltage output power can all manostat, very wasteful and inconvenient. Along with the rapid development of electronic technology of power demand is higher and higher. For all the old power can output voltage stabilizer, based on the integration of multiple stabilizer can output the power supply voltage power transformer.
This design is the direct current voltage-stabilized source 220V power input voltage into rectifying circuit, the voltage required by the bridge rectifier circuit single-phase ac voltage transform into the pulsation of the dc voltage, then the capacitance filter will pulsation dc voltage ripple, filtering into small voltage ripple, finally through stable output voltage regulator + 5V, + 12 v, - 12, + 24V and are adjustable dc voltage. According to the design requirements of manostat road, this project has adopted the three series, 78 79 integrated voltage series design a fixed output + 5V, + 12 v, - 12, and through the LM317 + 24V achieve output is adjustable dc voltage source. In the design of hardware mainly through its manostat, using simulated division element, through power transformers, rectifying and filter circuit and voltage circuit, manostat stable output + 5V, ± 12V, + 24V and adjustable output 1.2 ~ 24 voltage.
This topic design manostat costs, small volume, light weight, convenient and reliable work, are used in various advantages of transistor instrument and meter, teaching, automatic control system and equipment of dc power supply.
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第2个回答 2010-05-25
Almost all electronic devices require a stable DC power supply. But the general DC power supply regulated power supply can output all the way, is waste and inconvenient. With the rapid development of electronic information technologies have become increasingly demanding on power. Only for the old power supply regulated power supply output of the shortcomings of the way, was proposed based on integrated voltage regulator power supply can output multiple multiple regulated power supply transformer.
The design of the DC power supply is 220V AC Power Input voltage into the required voltage rectifier circuit and then the single-phase bridge rectifier circuit converts the AC voltage ripple of the DC voltage, then the pulse capacitor filter DC voltage ripple filter into a small ripple voltage, and finally through the regulator output voltage +5 V, +12 V, -12, +24 V and is adjustable DC voltage. According to multiple regulated power supply design requirements, the subject of integration with the three-terminal regulator 78 series, 79 series, designed a fixed output +5 V, +12 V, -12, +24 V and output is achieved through the LM317 Adjustable DC Power Supply.Primarily through the design of the hardware to complete the requirements of its regulated power supply, analog discrete components, through the power transformer, rectifier and filter circuit and the voltage regulator circuit, power supply stable output +5 V, ± 12V, +24 V and can be adjust the output voltage of 1.2 ~ 24.
The subject of design and cost-end power supply, small size, light weight, easy to use and working and reliable, to be used for various transistor devices, instruments, instruction, automatic control systems and equipment, DC power supply.
第3个回答 2010-05-25
All the equipment need stability of the dc power supply. But general dc voltage output power can all manostat, very wasteful and inconvenient. Along with the rapid development of electronic technology of power demand is higher and higher. For all the old power can output voltage stabilizer, based on the integration of multiple stabilizer can output the power supply voltage power transformer.
This design is the direct current voltage-stabilized source 220V power input voltage into rectifying circuit, the voltage required by the bridge rectifier circuit single-phase ac voltage transform into the pulsation of the dc voltage, then the capacitance filter will pulsation dc voltage ripple, filtering into small voltage ripple, finally through stable output voltage regulator + 5V, + 12 v, - 12, + 24V and are adjustable dc voltage. According to the design requirements of manostat road, this project has adopted the three series, 78 79 integrated voltage series design a fixed output + 5V, + 12 v, - 12, and through the LM317 + 24V achieve output is adjustable dc voltage source. In the design of hardware mainly through its manostat, using simulated division element, through power transformers, rectifying and filter circuit and voltage circuit, manostat stable output + 5V, ± 12V, + 24V and adjustable output 1.2 ~ 24 voltage.
This topic design manostat costs, small volume, light weight, convenient and reliable work, are used in various advantages of transistor instrument and meter, teaching, automatic control system and equipment of dc power supply.本回答被提问者采纳
第4个回答 2010-05-25
Almost all in electronic equipment need stable dc power supply. But general dc voltage output power can all manostat, very wasteful and inconvenient. Along with the rapid development of electronic technology of power demand is higher and higher. For all the old power can output voltage stabilizer, based on the integration of multiple stabilizer can output the power supply voltage power transformer.
This design is the direct current voltage-stabilized source 220V power input voltage into rectifying circuit, the voltage required by the bridge rectifier circuit single-phase ac voltage transform into the pulsation of the dc voltage, then the capacitance filter will pulsation dc voltage ripple, filtering into small voltage ripple, finally through stable output voltage regulator + 5V, + 12 v, - 12, + 24V and are adjustable dc voltage. According to the design requirements of manostat road, this project has adopted the three series, 78 79 integrated voltage series design a fixed output + 5V, + 12 v, - 12, and through the LM317 + 24V achieve output is adjustable dc voltage source. In the design of hardware mainly through its manostat, using simulated division element, through power transformers, rectifying and filter circuit and voltage circuit, manostat stable output + 5V, ± 12V, + 24V and adjustable output 1.2 ~ 24 voltage.
This topic design manostat costs, small volume, light weight, convenient and reliable work, are used in various advantages of transistor instrument and meter, teaching, automatic control system and equipment of dc power supply.
第5个回答 2010-05-25
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