Useful tips for everyday
How is an active DI different to a passive DI? The most obvious difference is that passive DI boxes don’t need to be powered. Active…
How is current measured in a power supply? Power supplies use an internal shunt resistor to measure current. Figure 1. Keysight E36312A measuring the voltage…
What is root mean square error? Root mean squared error (RMSE) is the square root of the mean of the square of all of the…
How do you calculate RF output impedance? In general, to measure an output impedance, you just connect a known impedance across it and measure the…
What is Dashboard in web design? Dashboard is usually the one page that the users see first thing in the web application. It is the…
Which apps is not included in Office 365? Microsoft Visio and Microsoft Project are both members of the extended Office family but are not included…
Does an access point give off WiFi? An access point is a device that creates a wireless local area network, or WLAN, usually in an…
How do I open Safari Preferences menu? 1. Open Safari, and choose Safari > Preferences. Note: If you are viewing Safari in full-screen mode, mouse…
What are different types of RFID? Each RFID type can be either active (powered), passive (un-powered) or semi-passive (battery-assisted). Low-frequency (LF) RFID tags: 30 KHz…
How can I see file sizes in Google Drive? Drive At drive.google.com, look near the bottom of the left column for the text listing the…