Useful tips for everyday
How do I determine the colour code of a resistor? Reading and Determining the Resistor Value Hold the resistor with the gold or silver band…
What happens if you add a branch to a parallel circuit? Adding more parallel resistances to the paths causes the total resistance in the circuit…
What video standard is VHS? Standard VHS The letter “T” is used for NTSC video recordings, whereas the letter “E” is used for PAL or…
How does telephone ringer work? In landline telephones, bells or ringtones are rung by impressing a 60 to 105-volt RMS 20-Hertz sine wave across the…
Do LED lights lose brightness over time? LEDs are long-life light sources which generally do not suddenly fail, but gradually lose their brightness and performance…
How does a servo hold its position without a signal? The way I understand servo motors to work is that there is a constant feedback…
How is the radiation pattern of an antenna represented? This is a mathematical function of radiation properties of the antenna represented as a function of…
What is the main difference between an analog temperature sensor and a digital temperature sensor? Refer analog signal processing vs digital signal processing >> for…
How do you measure contact resistance on a circuit breaker? Static contact resistance is measured by injecting a dc current through the breaker and measuring…
How fuse and earthing can be useful? Earthing prevents potential difference building up between the device and surroundings (which would flow through you if you…