12v fixed 12A negative power supply regulator.
It is a -12V Negative Voltage Regulator power supply. This is the circuit diagram. In this circuit, an input negative voltage of -24V is used with an output negative voltage of -12V. This power supply can drive negative 12v, 12amp(max), and 75-watt(max) devices. It can be used as a 75-watt (max) device. This power supply uses a voltage regulator LM7912 and BD711 NPN Transistor. DC to DC voltage can be converted through this circuit. This is called a stop-down negative power supply.
Circuit Diagram
Circuit Components
- BD711 Transistor [See Buy Click Amazon]
- 3.3-ohm Resistor [See Buy Click Amazon]
- LM7912 voltage regulator [See Buy Click Amazon]
- 1uf,50V Capacitor [See Buy Click Amazon]
- 0.1uf,50V Capacitor [See Buy Click Amazon]
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Components used:
- BD711 Transistor
- 3.3-ohm Resistor
- 1uf,50V Capacitor
- LM7912 Voltage Regulator
- 0.1uf,50V Capacitor
Transistors are electronic parts. this component amplifies or modifies electrical signals or power in circuits. It is made of semiconductor material. two sorts of transistors of n-type or p-type. It works relying upon the electric flow. Transistors have three terminals: emitter, collector, and base (or source, drain, and gate). By applying a little voltage or current to the base (or gate), the transistor has some control over the progression of current between the emitter(or source) and collector (or drain).
NPN transistors are made of silicon or germanium semiconductor materials. When a p-type semiconductor element comprises two n-type semiconductor elements, it is called an NPN transistor. Shows an NPN transistor consisting of a layer of p-type material sandwiched between two layers of n-type material. NPN transistor has three terminals: emitter, base, and collector.
The BD711 is an NPN Transistor. When the base pin is grounded, the collector and emitter pins are open (reverse biased). When a positive voltage is applied to the base pin, the collector and emitter pins will be closed (forward-biased). It is a bi-polar NPN transistor. This component has a maximum collector current (IC) of 12A, an emitter-base voltage (VBE) of 100V, a base current (IB) of a maximum of 5A, a maximum of 75 watts, and a Collector peak current of 18amp.
A resistor is a component that resists the flow of electricity in a circuit. It is used to control the amount of current, voltage, or signal level in various applications. The unit of resistance is ohm (Ω). Carbon Film Resistor.Value: 3.3 Ohm Wattage: 2W, Approximate Maximum Current: 1.16A, Tolarence: ±5% Durable and easy to install Small, low noise, precise and stable performance.Long service life.3.3 Ohm Resistor Color Code: Orange, Orange, Golden, Golden.
The capacitor is a Two-Terminal detached part having the Property of Capacitance This Property Zaps (accusing of power) Capacitors with input Voltage. Capacitors Gather Power, Thus it is otherwise called a Condenser. It comprises two Electrical Conveyors that are Isolated by Distance. The Capacitor Stores Charge and can carry on like a Battery. It is fundamental for channel Circuits to Limit voltage spikes, and Smoothing changes in voltage.
The LM7912 voltage regulator fixed-voltage is an integrated circuit (IC). The Voltage Regulator provides constant output voltage even if its load or input voltage changes.LM7912 is a monolithic 3-terminal negative voltage regulator. It provides a fixed regulated output of -11.5V to -12.5V DC for a variable input voltage range of -14.5V to -27V DC. The maximum output current is 1.5 A. The dropout voltage of LM7912 is 2V. LM7912 IC is in compact packaging with 3 pins for negative input voltage/negative output voltage and ground pin. It has internal thermal shutdown, short-circuit and SOA protection, and an output capacitance of 0.5 pF.
The capacitor is a Two-Terminal detached part having the Property of Capacitance This Property Zaps (accusing of power) Capacitors with input Voltage. Capacitors Gather Power, Thus it is otherwise called a Condenser. It comprises two Electrical Conveyors that are Isolated by Distance. The Capacitor Stores Charge and can carry on like a Battery. It is fundamental for channel Circuits to Limit voltage spikes, and Smoothing changes in voltage.
Frequently Asked Questions:
What is the maximum input voltage of LM7912?
LM7912 maximum input voltage is 27V.
What is the minimum input voltage of LM7912?
LM7912 maximum input voltage is 14.8V.
What is the maximum output current of LM7805?
LM7805 maximum output current up to 1amp
What is the maximum Collector Base voltage of the BD711 Transistor?
BD711 Transistor maximum Collector Base voltage is -100V.
What is the maximum Collector-Emitter voltage of the BD711 Transistor?
BD711 Transistor maximum collector Emitter voltage is -100V.
What is the maximum Collector Current of the BD711 Transistor?
BD711 Transistor maximum collector Current is 12amp.
What is the maximum collector peak Current of the BD711 Transistor?
BD711 Transistor maximum collector peak Current is 18amp.
What is the maximum Base Current of the BD711 Transistor?
BD711 Transistor maximum Base Current is 5amp.
What is the maximum Emitter Base voltage of the BD711 Transistor?
BD711 Transistor maximum Emitter Base voltage is 5V.
What is the maximum power of the BD711 Transistor?
BD711 Transistor maximum power is 75watt.
What is the maximum storage temperature of the BD711 Transistor?
BD711 Transistor maximum storage temperature is -65 to 150 degrees Celsius.
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