Office Monitoring System
This system can be used in offices or hotels to call an attendant from seven different locations. The circuit provides audio indication of the...
Milliohm Meter
Milliohm meter is used to check low resistance of connecting wires. It can deduce the resistance of thick wires, condition of contacts and the...
Testing Of Solar-Based Devices And Panels
With booming solar industry there is a need for measurement instruments to test the various components of solar-powered systems
COL (RETD) N.C. PANDE
JULY 2011: Solar...
Door Ajar Alert
Have you ever accidentally left your front door ajar and had a pet or your little kid escape? Here is a smart solution to...
Is Your Oscilloscope Smart And Connected?
Higher analogue bandwidth, higher sampling rate, higher memory points and faster response are the biggest trends seen in oscilloscopes. But inbuilt support for connectivity...
High-Resistance Meter
This resistance meter can measure resistances up to 200 mega-ohms. The value of the resistance is indicated on a linear meter scale (0-100 uA)....
“Printers are being designed for the living room”
Canon claims to have brought a technological edge in printers with its Full HD Movie Print that allows consumers to capture and print favourite...
“As the world talks about green products, power supply design has...
While talking about analogue design and business, evolution of electronics power supply and latest developments in power supply ICs,Balu Balakrishnan, president and CEO, Power...
TELEPHONE LINE IN-USE INDICATOR
This circuit gives a visual indication of whether a telephone line is in use or not, helping two or more people sharing the line...
RADIO/AUDIO FREQUENCY GENERATOR CUM BFO
This radio-cum-audio frequency signal generator can also be used as a beat frequency oscillator (BFO) for continuous-wave and single-sideband signals.
Fig. 1 shows the circuit...
