Q:Power amplifier with a good power or good switching power supply?

Generally believed that the best R-type transformer, ring type, switching power supply transient response is not enough, open-loop can be used, but the effect is poor. Now there are dedicated power amplifier switching power supply, the main features are: resonant switch circuit; (and the same effect as the transformer sine wave effect, very little interference, the car amplifier has been using resonant circuit). Open-loop output, not regulated output, no response time. Heavy weight, high efficiency and so behind are nonsense

Q:What is the difference between Switch Mode Power Supply and electronic switch? Where are they?

Switching power supply is a large class, usually we say that the switching power supply is AC variable DC power supply, but in fact, including DC variable DC, DC variable AC (inverter) should belong to the switching power supply.

Q:Electronic transformer, inductive transformers, switching power supply transformer What is the specific difference? What kind of situation which the election of a transformer? 5 Halogen spotlights require dimming control, LED lights have to dim, Will the high school electronic transformers, switching power supply can be used with dimming?

Inductive transformer is the use of electromagnetic core by the primary / edge winding different turns to achieve the "transformer" purpose; electronic transformer and switching power supply transformer has a similar place, in fact, switching power supply is one of the electronic transformer. The method is composed of changes in the voltage generated by the circuit, the method is diverse, can be (frequency variable) AC output, it can be DC output. Switching power supply is the way of electronic switch, by the electronic circuit constitute the oscillator, through the high-frequency magnetic winding to produce different high-frequency AC voltage and then through the rectifier output different DC voltage

Q:Switching power supply start-up time, hold time, long time, fall time, which standard

Switching power supply start time is the power switch to close to the output voltage of 90% of the Uo up to that time; Hold time is the power switch off, to the output voltage dropped to 90% of the Uo period of time; Rise time is the power supply output voltage from 10% Uo up to 90% of the Uo period of time; The falling time is the time that the output voltage of the power supply drops from 90% of Uo to 10% of Uo.

Q:UPS and switching power supply what is the difference

UPS is a power out, the computer can work for some time, the principle and the phone or laptop battery almost

Q:Note the operating conditions of 220V voltage and the order of switching power supply

Power failure - electricity - lock - seal ground - warning signs

Q:What is the power of the switching power supply?

Of course, abroad is the Siemens ah, is the price is more expensive, Ming Wei fake too much, Bingbu not bad, the quality did not say

Q:What is the industrial switching power supply

Industrial switching power supply refers to the switching power supply used in the industrial field Power can be divided into civil, industrial, military, and even aviation, aerospace Industrial switching power supply meets industrial requirements. For example, civil switching power supply generally require working temperature 0 ~ 70C, the industry is generally required in the -40 ~ 85C, military requirements are -55C can work properly.

Q:How are two ac inputs connected to the socket? G1 and G2 and FG is not connected together, and then connected to the chassis? thank you

According to your instructions to write your power is two output, Two AC terminals through the power cord can be directly connected to the socket, no positive and negative points; FG is the power and the earth (that is, the chassis) connected; In the order you say, G1 and V1 are a group (G1 is this negative, V1 is positive); G2 and V2 are a group (G2 for this road negative, V2 is positive); Note: FG and G1, G2 can not be mixed!

Q:I have a 12V3A switching power supply. From 0V to 12V, 2V3V can start. Want to carry out voltage regulation. How to do? If you use the potentiometer to connect the kind of potentiometer. I connected to the permanent magnet three brush motor is the car with the wiper motor, the motor high and low speed adjustment. Originally wiper motor there are two blocks. Richer speed adjustment.

12V3A switching power supply can not change the output voltage by external voltage regulator. Switching power supply PWM control technology using pulse width modulation technology to control the opening and closing of the switch, in order to achieve the stability of the output voltage. Switching power supply during operation, the output voltage changes through the optocoupler device to feedback the signal to the PWM controller, control switch drive signal pulse width, that is, duty cycle, adjust the power switch switch ratio, to achieve stable output voltage purposes. External voltage regulator potentiometer, can not be reliable access to the output signal acquisition and feedback adjustment function, it can not be achieved by an external regulator potentiometer to adjust the switching power supply output voltage.