Theoretical circuits can not be without switches

The circuit is the basic component of the electrical path circuit composed of connecting the power supply, electrical appliances, switches, etc. with wires: power supply, electrical appliances, switches, wires, so the correct circuit can not be without switches.

Here's the basics of circuits:

The composition of the circuit.

A proper circuit should consist of the following basic components: Power supplies, appliances, switches, and wires. The role of the power supply is to convert other forms of energy.

the role of providing electrical energy for electrical energy; The wire plays the role of connecting circuit elements and transmitting electrical energy to electrical appliances; The switch controls the delivery of electrical energy (the on/off of the current); Electrical energy is converted into other forms of energy with electrical appliances. If a circuit is missing some of these four basic components, the circuit will not work or be faulty or dangerous (short circuit).

The main purpose of adding a switch is to disconnect the circuit in an emergency, ensure the safety of equipment and personnel, and facilitate maintenance and maintenance.

Circuits refer specifically to conductive circuits composed of metal wires and electrical and electronic components, which are called circuits. I didn't say there had to be a switch.

To be honest, I'm also wondering, theoretically, if you don't think about safety, can't you just remove the switch?

If you're serious, it's really not good about this question?

Is this a complete circuit? It seems that there is still a lack of a switch controller, so that's all.

Buckle: Chief manure digger.

What is the power supply of this circuit called when it rains?

Circuits without switches usually refer to some basic circuits or circuits of specific design, in which there is no need for manual or automatic switching to control the working state of the circuit.

The following resale is a large example of some circuits without switches:

1.Constant Current Source: A constant current source is an electronic circuit that can provide a constant nuclear vertical current output without the need for manual or automatic switching to control.

2.Oscillator circuits: Oscillator circuits can generate an alternating electrical signal and do not require manual or automatic switching to control.

3.Capacitive touch switch circuit: This circuit can change the state of the circuit by touching the human body, but does not require manual or automatic switching.

4.Electronic gate circuit: The electronic gate circuit can control the state of the output signal according to the state of the input signal, and there is no need for manual or automatic switching.

These circuits have specific uses and application scenarios, and can be widely used in different electronic devices and circuits.

1.Closed-circuit circuit: Generally refers to a circuit that is not controlled by a switch and is composed of multiple components, and the current can flow freely and will not be disconnected by the switch.

2.DC such as missing circuit: a circuit that does not change the direction of the current, and because the direction of the current does not change, there is no need for switching control.

3.Resistive circuit: A circuit composed of resistive components, which does not require on-off control, because the resistive elements can realize the control of the current. Bad dress.

4.Capacitive circuit: The circuit composed of capacitive elements does not need to be controlled by switches, because the capacitive elements can achieve the stability of the current, so as to realize the regulation of the circuit.

5.Inductive circuit: A circuit composed of inductive elements, which does not need to be controlled by switching, because the inductive elements can realize the change of current, so as to realize the regulation of the circuit.

6.Electronic circuit: A circuit composed of electronic components, which does not need to be controlled by switches, because electronic components can realize the control of the circuit, so as to realize the regulation of the circuit.

1 Passive circuits.

2 Since the passive circuit does not contain hail active components, such as transistors, field effect transistors, etc., it does not have the function of switching.

Common passive circuits include resistance, capacitance, and extremity.

3 In the actual circuit of Libi, the switching function of the circuit can be realized by using switching components (such as relays, electronic switches, etc.).

Answer: Circuits without switches include resistance circuits, capacitor circuits, inductance circuits, amplification circuits, filter circuits, oscillation circuits, etc. The resistor circuit is a circuit composed of a resistive element and a power supply, the capacitor ruler Wangyuan circuit is a circuit composed of a capacitor element and a power supply, the inductance circuit is a circuit composed of an inductive element and a power supply, the amplification circuit is a circuit composed of an amplification element and a power supply, the Lingmai filter circuit is a circuit composed of a filter element and a power supply, and the oscillation circuit is a circuit composed of an oscillating element and a power supply.

None of these circuits have switches and can perform different functions. Personal tip: When building a circuit without switches, pay attention to the stability of the circuit, as well as the selection of components in the circuit to ensure the proper operation of the circuit.

Answer: The circuits without the ruler include resistance circuits, capacitor circuits, inductance circuits, amplification circuits, filter circuits, transformer circuits, etc. The resistor circuit is a circuit composed of a resistive element and a power supply, the capacitor circuit is a circuit composed of a capacitor element and a power supply, the inductance circuit is a circuit composed of an inductive element and a power supply, the amplification circuit is a circuit composed of an amplification element and a power supply, the filter circuit is a circuit composed of a filter element and a power supply, and the transformer circuit is a circuit composed of a transformer element and a power supply.

These circuits do not have switches, and the circuits can be controlled and regulated. Personal tip: When designing the circuit, it is necessary to choose the appropriate circuit according to the actual needs to ensure the normal operation of the Lingstate circuit.

There are very few circuits without switches, and even if they are automatically controlled by Koreyu, they should be set up and managed. or light control, infrared control, clock control, ......Wait. Circuits with small power consumption and no potential safety hazards can be switched or not switched in the vertical section with fewer fierce poles, and the power can be cut off by someone to disassemble the battery.

For example, the clock circuit has small power consumption, and there is no potential safety hazard, so you can do without switching. Products with potential safety hazards must be switched.

Some circuits that do not have switches include amplifier circuits, filter circuits, oscillator circuits, feedback circuits, sensor circuits, and pulse circuits, etc.

In the circuit, the switch only plays the role of making and closing the circuit. If you don't use the switch, the bulb is directly connected to the circuit, as long as the circuit is active and closed, the bulb can emit light, this situation is equivalent to the switch Yu Liang Sui is in a closed state, but this kind of Lianqing Bu connection method is equivalent to live operation, and it is generally not allowed to wire like this. As you can see in the diagram below, the switch is equivalent to a length of wire.

Right. Please refer to:

The circuit is composed of four parts: power supply, load, connecting wires and auxiliary equipment. The circuits in practical application are relatively complex, therefore, in order to facilitate the analysis of the essence of the circuit, the actual components of the circuit and its connecting lines are usually represented by symbols, that is, the so-called circuit diagram is drawn. Among them, the conductor and auxiliary equipment are collectively called intermediate links.

A power supply is a device that provides electrical energy. The function of a power supply is to convert non-electrical energy into electrical energy. For example, batteries convert chemical energy into electrical energy; Generators convert mechanical energy into electrical energy.

Because there are many types of non-electric energy, there are many ways to convert into electrical energy, so there are many practical power supply types, and the most commonly used power sources are solid-state batteries, storage batteries and generators. The power supply is divided into two types: voltage source and current source, only the voltage source of the same size is allowed to be connected in parallel, and only the current source of the same size is allowed to be connected in series, and the voltage source cannot be short-circuited, and the current source cannot be opened.

Loads (i.e., "appliances") The various devices that use electrical energy in electrical circuits are collectively referred to as loads. The function of the load is to convert electrical energy into other forms of energy. For example, an electric furnace converts electrical energy into internal energy; Electric motors convert electrical energy into mechanical energy, and so on.

Lighting fixtures, household appliances, machine tools, etc., which are commonly used, can be called loads.

Wire connection wires are used to connect power supplies, loads, and other auxiliary equipment into a closed loop, which plays the role of transmitting electrical energy.

Ancillary Equipment. Auxiliary equipment is used to control, distribute, protect and measure the circuit. Auxiliary equipment includes various switches, fuses, ammeters, voltmeters and measuring instruments.

In junior high school, we define the circuit as the path of electricity that connects switches, electrical appliances, and power supplies with wires.

From this definition, the circuit must have a switch, which can be broken as a control circuit.

From a practical point of view, without a switch, the electrical appliances will always work, and it is not reasonable.

Therefore, when drawing is required in junior high school, there must be a switch. Otherwise, it's wrong.