Engineering Knowledge

Vcc:

The supply voltage for a circuit is often given as V plus a double-letter suffix. The double letter is usually related to the lead of the transistors that are commonly connected to that supply or to a resistor that connects to that supply.

Examples: VCC is a positive-voltage supply and the collector terminal of bipolar transistors is connected to the VCC supply or to a load which connects to VCC. VSS connects to the source terminal of a FET, etc.

VLSI:

Very large-scale integration (VLSI) refers to an IC or technology with many devices on one chip.

Voltage Doubler:

A capacitor charge pump circuit which produces an output voltage which is twice the input voltage.

Voltage Drop:

The loss of voltage between the input to a device and the output from a device due to the internal impedance or resistance of the device.

Voltage Margining:

Setting the output voltage higher or lower than the nominal voltage so that the output voltage remains within the specification during all load conditions.

Voltage Regulator:

A circuit which is connected between the power source and a load, which provides a constant voltage despite variations in input voltage or output load.