Engineers suppress disruptive electrical phenomena by adding filtering components, shielding, or specific circuit topologies. This can mean clamping high-voltage transients with a varistor, filtering out high-frequency hash with a ferrite bead, or canceling common-mode noise using differential signaling. Effective suppression ensures that sensitive logic or analog stages operate reliably in noisy electrical environments.
We need to suppress the flyback transient from that relay coil before it blows the driving transistor.
Related terms
EMI
An external memory interface connects a microcontroller or processor to off-chip memory.
Hash noise
A harsh, wideband electrical interference that sounds like a buzz or static on an audio output or looks like thick fuzz on a trace.
Varistor
A voltage-dependent resistor that protects circuits by shunting excess current during a power surge.