Twenty Rows' 2012 Cabernet Sauvignon was harvested in mid-to-late October from appelations across Napa Valley including Mt. Veeder, Coombsville, and Oak Knoll. The Cabernet Sauvignon fruit also includes 4% Petite Verdot, 4% Cabernet Franc, and 2% Malbec.
Zener diode is a diode which is used in its break down region. The diode is kept reverse biased in a circuit, and so it does not allow current to pass until the voltage is greater than the breakdown voltage of the zener.
In breakdown the voltage across the Zener diode is close to constant over a widerange of currents thus making it useful as a shunt voltage regulator. Characteristics Figure 1 shows the current versus voltage curve for a 5.1 volt Zener diode.ener Diode Voltage Regulators 2The forward bias region of a Zener diode is identical to that of a regular diode. In thereverse bias condition the Zener diode is an open circuit and there is only a small leakagecurrent in the microampere range.