Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
No reason it has to, and in many cases it certainly won't.
But for a perfect (theoretical) 'voltage' amplifier it would need to have infinite input impedance so it draws zero current - but real life doesn't work like that.
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