What does SVR mean in ELECTRONICS

Supply Voltage Rejection (SVR) is a measure of how well a circuit or device can reject changes in the supply voltage. It is usually expressed as a percentage and this percentage shows what fraction of the variation in supply voltage will appear as a variation in the output.

Increasing SVR requires using components that are more resistant to change in supply voltage, such as higher-quality capacitors and better power management techniques. Additionally, you can also use circuits like bandgap references to make sure that your circuit’s output remains relatively constant despite variations in the supply voltage.

When SVR is “good”, it means that the variation in output due to changes in supply voltage is very small compared to its nominal value. This means that your circuit outputs will remain relatively close to their desired values even if there are sudden changes in the power being supplied to them.

We care about SVR because it allows us to have more reliable operation from our circuits. If we have high SVR, then our outputs will be less affected by variations in our supplies, allowing for more consistent performance across various conditions and operating scenarios.

You can test your circuit’s SVR by applying known variations in the supply voltages and then measuring how much these changes affect your output signals with a multimeter. This will give you an idea of how well your circuit handles fluctuations in its input voltages and how robust it is against unexpected changes.

High levels of SVR are usually required for applications where accuracy or consistency of performance needs to be maintained at all times such as industrial controls, medical devices, automotive systems etc. As these applications require repetitively precise operations and responses – they must rely on having good levels of signal stability despite any unforeseen changes or disturbances present within their power supplies.

Technologies such as switching regulators, linear regulators, power amplifiers, operational amplifiers or precision references can all help improve an existing design’s SVR significantly when used correctly according to requirements.

Yes - some circuits such as basic amplification stages don't necessarily need high levels of Supply Voltage Rejection as they are not overly sensitive towards variations in their inputs voltages.