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.
Any noise on the power supply voltage is amplified by the circuit.
Without an input signal then the noise at the output should be very low. If there is noise then the opamps are bad or the wiring picks up interference.
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