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dc supply is used for control circuit because dc current is an independent source .
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∙ 11y ago
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Where should ac or DC supply be used?
The type of power supply being used (AC or DC) should match the power requirements of the device it will be supplying power to.
Why series a resistor with a load for a DC supply circuit?
Good question on a linear power supply a load is not really required since it is nothing but a low band power amplifier. ON a switching type power supply a minimum load is always required so the PWM has something to control to. Also the soft start circuit may blowup waiting for feedback .Critical circuit since it operates for a very short time. however the load is in parallel not in series.
What happens when a capacitor is connected to a dc supply?
is it ? are you sure ? but i know so many circuit where capacitor is connected with ac supply . still , if u connected a capacitor to dc supply , then : 1. if it is in SERIES with the dc supply , it will block all the dc current as capacitor provides infinite resistance to dc current . application : where u want to block dc current.(simple high pass filter) 2. if it is in PARALLEL with the dc supply , it will not block dc current , but if any ac current comes out from the supply , the ac current will go through the capacitor , as capacitor provides small resistance to ac current. application : a) where u want to block ac current.(simple low pass filter) b) to filter the noise (ac components) of dc supply.
What is the purpose of a blocking capacitor?
At high frequency, capacitor can be considered as 1. Short Circuit in AC analysis. 2. Open Circuit in DC analysis. {because Xc= 1/(2*f*pi) where f= supply frequency,pi=3.14} As at high frequencies, in DC analysis, capacitor will be open circuited & can block the DC signal while AC signal is allowed to pass through.. Hence, this capacitor will act as a blocking capacitor for DC supply.
Can you use transformer for DC supply?
No. Only Transformer could not be used for DC supply.If yoy need to have DC out put,then rectifier unit required .
What is a DC supply used for in a circuit?
all electronic circuits require some DC supply for operation. This supply is used to put the individual active devices at a correct operation status to enable them to operate at conditions as conceptualised by the circuit designer. If the DC supply is Not correct i.e too low , high or Not of constant value the circuit is most likely to malfunction with possibly disasterous consequences depending on the application.
What kind of supply is given to the circuit?
ac supply is given and then in the circuit rectifier converts ac to dc
What is use of RFC in Hartley oscillator?
it is a radio frequency choke which connects the dc supply to the circuit but isolate the dc supply from the high frequency oscillations generated in the feedback circuit
Why is a DC voltage supply used for energizing the tripping coil of an air circuit breaker?
If a fault in the system disconnects the substation, then batteries are the only supply available to trip the circuit breakers. Batteries, of course, are d.c.
Can a DC series motor with speed control be connected on AC supply?
A dc series motor with speed control can be connected on ac supply because dc machines are totally reversible.
Which circuit element is used to block DC in an electronic circuit?
Capacitance will block DC
Why DC-DC converter is used in telecommunication power supply instead of inverter?
DC-DC conversion offers the advantage of a bifurcated power source. AC can be rectified and filtered to supply power under normal conditions at say, 17VDC fed to a 9VDC regulator to power the circuit. A 12VDC battery can serve as an alternate feed to the circuit for times when the AC source fails -- and it is connected to the same 9VDC regulator. Another benefit of DC-DC conversion is isolation to the circuit from noisy events.
What are the applications of variable DC power supply?
variable dc supply are used to get desired amount of dc supply
Why transformer can not be used in dc supply?
The transformer cannot be used in the DC supply because it keeps on alternating its current, whereas the DC supply current should be constant.
Why dc source is used for dc supply?
it is only work on it so that used
What happens if dc supply is connected to incomer of transformer?
If a DC supply is connected to the incomer of a transformer, you effectively have a short circuit, because the DC impedance of a transformer (actually, any inductor) is quite low. You will blow something.
Why capacitance is not used in DC circuits?
as it acts ideally as open circuit for dc
