Robert Nicoletti is an applications engineer with Maxim Integrated Products, Sunnyvale, Calif. He received a BSEE from San Jose State University, Calif. Email address: Rober_Nicoletti@maximhq.com Web site: http://www.maxim-ic.com/
3 results found for Robert Nicoletti, displaying items 1 - 3
May 25, 2006[Ideas For Design] Battery Backup Uses Delay To Avoid Glitches
The simplest link from a main supply and backup battery to a load is the diode-OR connection. But a diode-OR doesn't work when the backup battery's voltage exceeds the main supply voltage. The circuit in Figure 1 handles that condition. Its main switch-mode supply voltage ranges from 7 to 30 V, and the backup supply is a 9-V battery. IC1 is an ultra-low-power device that includes a comparator and a 1.182-V bandgap reference. During normal operation, the comparator output is low,...
April 14, 2005[Ideas For Design] Simulate Lithium Batteries With A NiMH Cell
Lithium-based batteries are becoming standard in portable equipment. They have desirable characteristics, but lead times may be long unless you have a preferred-customer status with the battery manager. A backup alternative is desirable, especially for smaller companies. It should (ideally) provide the same performance, size, and cost as a lithium-type battery. Nickel-metal-hydride (NiMH) batteries are still in wide use. They're much cheaper than lithium batteries, and they...
