The HV9910B includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 250mV linear dimming input which can be used for linear dimming of the LED current. The HV9910B is ideally suited for buck LED drivers.
The oven temperature used to cook a beef roast is usually set somewhere between 300 degrees and 450 degrees Fahrenheit. The recommended cooking temperature for your roast is usually determined by the type of beef cut that you plan to roast.
â¢ For food safety reasons, DO NOT thaw beef roasts on countertops or at room temperature. â¢ Cook immediately after thawing; beef roasts should be cooked to an internal temperature of 145 to 160 degrees F using a food thermometer.You canât tell if food is cooked safely by how it looks. Roasted or braised beef roasts for about 45 minutes per pound at 325 degrees F. A 2-pound roast will take about 1 Â½ hours to cook. â¢ Slice cooked beef roasts and serve with gravy; steamed vegetables; and rice, noodles, or potatoes.