RANGKAIAN 7805 REGULATOR

7805 REGULATOR IC

7805 REGULATOR Schematic

If you'd like to build a little electrical power provide +5 V, the 7805 regulator is a superb selection, specifically for experiments with digital circuits since the type of IC is commonly available in the market. This IC attributes over-heating safety, stops supplying present-day in case of extra heat.

This circuit can offer +5 V output at about a hundred and fifty mA present, but is often enhanced to 1 A when great cooling is extra to your 7805 regulator IC.

The capacitors will need to have adequate high voltage rating to securely manage the input voltage feed to circuit. The 7805 regulator circuit is extremely simple to make by way of example into a bit of veroboard.

Modification Output Existing and Volatges

In case you want a latest output of over 150 mA, make sure you update the output present approximately 1A. Transform the transformer you use to your transformer that has a existing rating larger than ever before. Really don't neglect to place the heatsink within the 7805 regulator IC.

If you need to have a voltage output larger than +5 V, make sure you modify the circuit by changing the 7805 regulator IC to a unique output voltage from regulator 78xx ICs. You need to understand that no less than 3V input greater than regulator output voltage you will want for IC function thoroughly.

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Current Limiting Power Supply Diagram

Description

This is a 1-amp variable-voltage PSU. It adjusts from about 3v to 24v: and has the added feature that you can limit the maximum output current. This is invaluable when (for example) you power-up a project for the first time or soak-test a piece of equipment.

Notes

SW3 is the on/off switch. It also lets you choose between the output with the current limit and the one without. SW2 provides a selection of three different limits. You can increase or decrease this number if you wish. The limits are fixed by R4, R5 & R6. They are set at 10mA, 25mA & 65mA respectively; but you can choose whatever limits you like. If you try to draw a current above the limit you've selected, the output voltage will fall. Thus, the voltmeter indicates when the load on the output is excessive.

The housing should be well ventilated. The heatsink is a folded strip of aluminium about 2mm thick, 18cm long and 6cm tall. SW1 allows you to choose between the (3v to 12v) and (3v to 24v) outputs. This reduces the power the heatsink has to dissipate when the output voltage is low.

The drawing of the front panel is intended mainly as a wiring diagram - you can choose your own layout. The pin spacing of the L200C doesn't suit the stripboard; but with a little persuasion it can be made to fit. Since the limiting resistors may have a relatively low value, a few ohms between the contacts of the wafer-switch will have a significant effect. If (with time) you find that the limits have fallen, use a spray-cleaner on the switch.

Via

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RANGKAIAN POWER SUPPLY SWITCHING 5V

The switching regulator which used LM2575-5.0 in this page. You can make the stable voltage by using the 3 terminal regulator like LM317. However, because the output electric current and the inputted electric current are the same approximately, the difference between the input electric power (The input voltage x The input electric current) and the output power (The output voltage x The output current) is consumed as the heat with the regulator. Because it is, the efficiency isn�t good.

Data sheet for LM2575

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

http://www.national.com/pf/LM/LM2575.htm

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7812&7912 12 Vdc Dual Power Supply Circuit

12 Vdc Dual Power Supply circuit with IC 7812&7912

Voltage Regulators low power consumption IC 78W series used in our instrumentation is now so cheap they are an economical alternative to simple regulators NPN-stabilizers. In addition, they offer the benefits of better regulation, current limiting / short circuit protection to 1000 mA shunt and heat down if the electricity disperses too. Indeed, is not the only way for these drives can be damaged polarity is incorrect or excessive input voltage. Regulators Series 78W to kind of stay 8V input voltage of about 35V, while the type 24v withstand 40V. Of course, of course, that regulators will not work with such an important input differential output as it would lead to excessive power is dispersed. All controllers will deliver the 78W series 1000mA current maximum expected input differential voltage output of less than 7V. Otherwise, too diffuse power, thereby bringing the fire extinguished.
Two transformers were used to step voltage 230-250V AC input power. It manufactures power transformers 6-0-6V secondary terminals. This output is fed into the rectifier and filter capacitor. Filtered IC6 that served 3-pin voltage regulator that provides a regulated output + 5V. It is used to enable the DPM system. It also comes as the network voltage source temperature accuracy.
Other manufactures transformers with a capacity of 12-0-12V at its secondary terminals. The center was established as a fountain in the previous case. The other two secondary terminals are fed bridge rectifier constructed using diodes. Output recovered is filtered using a capacitor C5 and C6 for food and IC7 IC. In-8 IC7, which are 3-pin regulators provide output voltage of ± 8V. These two voltages are signal generator. TO-8V power source is applied to the temperature of the network, and the reference voltage. It is also necessary to +12 V and-12V supplies for the implementation of operational amplifiers. This can be easily done using a 12V zener diodes. The output of bridge rectifier is attached to the +12 V and-12V, respectively, using two zener diodes. In the zener output is fed to the terminals of the operational amplifier supply. For supply
for operational amplifiers must not be very effective in regulating + 12V, the use of Zener diodes be costly.
For the testing of electronic components voltage above 50 V is required. This can be achieved through quadruple the chain tension. It consists of four diodes and four electrolytic capacitors. Unreasonable Administration Secondary 12-0-12V is connected to quadruple string. Quadrupled output of the circuit is 68V to ground.

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RANGKAIAN POWER SUPPLY DC 2N3055

RANGKAIAN POWER SUPPLY DC DENGAN TRANSISTOR 2N3055

POWER SUPPLY DC 2N3055 Components LIST:

P1____________500R Linear Potentiometer
P2_____________10K Log. Potentiometer

R1,R2__________2K2 1/2W Resistors
R3____________330R 1/4W Resistor
R4____________150R 1/4W Resistor
R5______________1R 5W Resistor

C1__________3300µF 35V Electrolytic Capacitor (see Notes)
C2_____________1µF 63V Polyester Capacitor

D1,D2_______1N5402 200V 3A Diodes
D3____________5mm. Red LED

Q1___________BC182 50V 100mA NPN Transistor
Q2___________BD139 80V 1.5A NPN Transistor
Q3___________BC212 50V 100mA PNP Transistor
Q4 _________2N3055 60V 15A NPN Transistor

T1____________220V Primary, 36V Center-tapped Secondary
50VA Mains transformer (see Notes)
PL1___________Male Mains plug
SW1___________SPST Mains switch

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Rangkaian Power Supply Sederhana

Series of pictures above you can make application for the adapter or power suplly with the output voltage (V DC 12V output). Power supply on the only protected by capasitor as if the power supply is connected in series with the load. Therefore I suggest using the minimal specification capasitor with 35V. To power the power supply the more we can menggunakkan transistor TIP, but I have not membahasnya. To bridge dioda you can stack 4 of dioda then you become one solder bridge rectifier, or you can buy a bridge rectifier so that comb-shaped (sideways) or the box. Most dioda bridge I do not recommend using the 1 Ampere, in a series of adapter, the greater ampere dioda the better way in the current series. Dioda a toll road, and as the flow through the car. The large and wide toll road that is, the more rapid flow and run through a series of.

For the series of 5 V power supply, you can change the volt regulator on the type 7805 and 7905. This application applies the same in this series. For the series of variations such as the fuse or switch on / off you can try yourself.

+ 18 V transformer - at least 1 A CT

Capasitor at least 35 + V

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Rangkaian DC Power Supply 24 V

Component Rangkaian DC Power Supply:

P1____________500R Linear Potentiometer
P2_____________10K Log. Potentiometer

R1,R2___________2K2 1/2W Resistors
R3____________330R 1/4W Resistor
R4____________150R 1/4W Resistor
R5______________1R 5W Resistor

C1___________3300µF 35V Electrolytic Capacitor (see Notes)
C2______________1µF 63V Polyester Capacitor

D1,D2________1N5402 200V 3A Diodes
D3_____________5mm. Red LED

Q1____________BC182 50V 100mA NPN Transistor
Q2____________BD139 80V 1.5A NPN Transistor
Q3____________BC212 50V 100mA PNP Transistor
Q4 __________2N3055 60V 15A NPN Transistor

T1_____________220V Primary, 36V Center-tapped Secondary
50VA Mains transformer (see Notes)

PL1____________Male Mains plug

SW1____________SPST Mains switch

* P1 sets the maximum output current you want to be delivered by the power supply at a given output voltage.
* P2 sets the output voltage and must be a logarithmic taper type, in order to obtain a more linear scale voltage indication.
* You can choose the Transformer on the grounds of maximum voltage and current output needed. Best choices are: 36, 40 or 48V center-tapped and 50, 75, 80 or 100VA.
* Capacitor C1 can be 2200 to 6800µF, 35 to 50V.
* Q4 must be mounted on a good heatsink in order to withstand sustained output short-circuit. In some cases the rear panel of the metal box in which you will enclose the circuit can do the job.
* The 2N3055 transistor (Q4) can be replaced with the slightly less powerful TIP3055 type.

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