hi there am going to build a 60 watt amp kit. manufacturer says I need a 25v-0-25v@80va transformer my question is how many amps would that be? as transformer supplier works in amps.
thanks in advance for any help
thanks in advance for any help
va is 'volt-amps' and so a 25-0-25 @80va transformer can supply 1.6 amps current. 1.6 amp multiplied by 25 volt is 40 va and you have two such windings.
This rating for current is into a resistive load where the load draws current proportionally over the full 360 degree cycle. But to answer your question, the transformer has a 1.6 amp rating.
This rating for current is into a resistive load where the load draws current proportionally over the full 360 degree cycle. But to answer your question, the transformer has a 1.6 amp rating.
Your transformer does not need to be exactly 80 VA it could be bigger as long it is 25-0-25 volts. Look at the price and see what tou can get at a fair price.
Above answers are correct: 80VA/50V=1.6A
As to actual purchase: a 1.5 or 1.6A transformer will be "just" right for home use, where high power will not be continuous; now for DJ , PA or Musical Instrument use where continuous high power is the norm, try to get a 2A one or even 2.5A, simply to have a margin of security and to make it work relaxed.
Often there is little cost difference between "just adequate" and "next higher".
As to actual purchase: a 1.5 or 1.6A transformer will be "just" right for home use, where high power will not be continuous; now for DJ , PA or Musical Instrument use where continuous high power is the norm, try to get a 2A one or even 2.5A, simply to have a margin of security and to make it work relaxed.
Often there is little cost difference between "just adequate" and "next higher".
I intend to use as a harmonica amp probably wont run 60 watts all the time, will 1.8amps a side be ok this is kit https://www.jlmaudio.com/shop/amp-kit.html?display_tax_prices=1
Fine for that use, harmonica amps even if sometimes clipped for a grittier sound or to cut through in a noisy stage, don´t have continuous full power clipping.
You know which suffer the most?: Punk rock guitar amps 😱
Even worse than heavy metal ones.