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I have an Alesis DEQ230 Graphic EQ, where the audio output impedance is 220 Ohm. I want to connect it to my Logitech Z5500 speaker, where the input impedance is 8 KOhm
So my question is- can I connect them directly with the 2x 1/4 mono male jack to 3.5mm stereo female jack
For the successful amplification of the input signal the opamp should have ideally infinite input impedance . It should act like a buffer amplifierBUFFER amplifier--------------------->1.input impedance infinity2.output impedance zerothe reason is thatAny signal source will have source impedancefor the signal not to get lost and dropped across source impedance we ideally insert infinite impedance in series with it which makes the whole drop across the infinite impedance but not across the sourcesimilarly at the output zero impedance is used where in no part of the signal should be left behind in the op amp as a drop
The output impedance of a typical CMOS logic gate is generally high, typically in the range of tens to hundreds of kilo-ohms when in a high state (logic "1") and can drop significantly (to a few hundred ohms) when in a low state (logic "0"). This high output impedance in the high state allows for minimal power consumption, while the low output impedance in the low state enables efficient driving of subsequent stages. The specific value can vary depending on the technology node and design specifications used.
bcause amplification factor beta is usually ranges from 20-500 hence this configuration gives appericiable current gain as well as voltage gain at its output on the other hand in the Common Collector configuration has very high input resistance(~750 kilo ohm) & very low output resistance(~25 ohm) so the voltage gain is always less than one & its most important application is for impedance matching for drivingh from low impedance load to high impedance source
Configuration Voltage Gain Current Gain Input Resistance Output Resistance Common- Source AV >1 - ∞ Moderate to high Source-Follower AV ≈ 1 - ∞ Low Common- Gate AV > 1 Ai ≈ 1 Low Moderate to high Both the common-gate and common source has voltage gain of greater that 1 compared with the voltage gain of source- follower which is less than or approximately equal to 1 . The input resistance of both common-source and source follower is high typically ranges from kilo ohms and above while common-gate has a low input impedance ranges from hundred ohms or below. The output resistance of both common-gate and common-source are dominated by RD while source follower has low output impedance and is not dominated by RD
input kilo watt
A: A transformer will transform the AC input to a low or hi output as required by a ratio of input to output. The power will be expressed a KVA or kilo volts to ampere ratio. It also will have a rating of maximum voltage for the simple reason of winding to winding insulation and primary to secondary isolation because if breakdown occurs the transformer will burn out promptly.
They are equal weight.
watts are units that measure output of an electrical device a kilowatt is simply a thousand watts because 'kilo' means thousand so 'kilo'watt = 1000 watts :)
kVA - Kilo Volt Ampere The calculation used to find kVA is P=I x E Where P is Power in Watts (W) I is the current in Amperes (A), and E is applied voltage in Volts (V) The result is divided by 1,000 to denote the k for kilo. As such a voltage of 120 with 10 amperes being drawn would equate to 1200 watts which can be shown as 1.2 kiloWatts or 1.2 kVA. The measure of kVA is specifies the Wattage capacity of a transformer. Any higher Power output (or Voltage input) will cause the transformer to overheat and trip breakers.
Suppose you have two 100 kilo Ohm resistors in series across a 12 volt supply.The expected and actual voltage at their junction is 6 volts. Now measure the voltage across one resistor with a Voltmeter. The instrument must take a little power to move the meter needle or be taken by the digital circuitry. If the input resistance of the voltmeter is 100 Kilo Ohms then it will make that resistor under test appear to be 50 Kilo Ohms. The voltage across the resistor drops to 4 Volts. This is the loading effect of the voltmeter.
It depends upon what the actual (rather than theoretical) output power is, in kilowatts, and for how long it is operating, in hours.
it is obviously the same weight because it say KILO for both!