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.
Operation of Zener Diode: 1  Zener diodes are normally used only in the reverse bias direction. 2  It means that the anode must be connected to the negative side of the voltage source and the cathode must be connected to the positive side. Varying amount of reverse current can pass through the diode without damaging it. 2  The breakdown voltage or zener voltage (VZ) across the diode remains relatively constant. 3  The maximum reverse current is limited, however, by the wattage rating of the diode.