Giovanni Romeo, technical director with the Istituto Nazionale di Geofisica e Vulcanologia in Rome, received a laurea in physics from Rome University, "La Sapienza." Email address: romeo@ingv.it
4 results found for Giovanni Romeo, displaying items 1 - 4
November 5, 2009[Ideas For Design] Achieve MPPT Control Without Power Calculation
A maximum power point tracking (MPPT) controller circuit is extremely useful in solar photovoltaic systems for boosting power usage efficiency. The traditional MPPT design, though, requires the use of a multiplier to calculate power from source voltage and current measurements. However, it’s possible to build an MPPT controller without this multiplication stage by measuring power on the load rather than using source parameters. If we aren’t in the presence of a...
March 12, 2009[Ideas For Design] "Unstable" Power Supply Simulates Solar Panel Behavior
This power supply may seem a bit strange, since it’s not stable in voltage or in current. However, it simulates the behavior of a solar panel and can be very useful if you’re working with a solar-powered device on a rainy day. A solar-panel circuit can be represented by a current generator and some diodes (Fig. 1a). The short-circuit current depends on the cell type and illumination. The open circuit...
February 16, 2004[Ideas For Design] Drive A Relay Using A 1-Wire Addressable Switch
The 1-Wire Net, or MicroLAN (by Maxim-Dallas), is a simple way to connect slow devices (such as sensors, relay drivers, switches, and so on) using simple components. These components contain the 1-Wire protocol handler, some type of interface to the...
