Tag Archives: electronics

Power Amplifier – Last Stage of Multistage amplifier

By | Published: September 30, 2009
As stated earlier, a power amplifier is the last stage of multistage amplifier. The previous stage develop sufficient gain and the input signal level or amplitude of a power amplifier is large of the order of few volts. The h-parameter analysis is applicable to small signal amplifiers and not valid for power amplifiers as power [...]
Posted in Uncategorized | Also tagged , , | Leave a comment

Knowledge of some advance transmission

By | Published: September 30, 2009
Start with the signaling system, the telecommunication system can be generalized model consisting of an information source, modulation system for coder, decoder for demodulation system, destination and of course transmission system or channel as the central feature. A telecommunication should learn how to minimize distortion by careful choice of the transmitted waveform. To do this [...]
Posted in electronics | Also tagged , , , | Leave a comment

Desktop Speakers

By | Published: September 29, 2009
Desktop Speakers are the small systems that connect to a laptop or PC. They come in variations from two channels and go up to 5.1 channels. Laptops come with on board speakers but they are good only for low decibel sound. To enjoy greater acoustics, users can go for external two channel speakers that [...]
Posted in electronics, technology | Also tagged , , , , , , , | Leave a comment

Type on your Wireless Keyboard

By | Published: September 29, 2009
Your couch may be comfortable, but it is not easy for you to sit back, relax and type on your wireless keyboard. The keys are not at the right angle and there is no flat surface for a mouse. So phantom keyboard is built with a twirling, tilting mechanism for positioning it just right. This lapboard [...]
Posted in electronics | Also tagged , , , , , , | Leave a comment

Construction of Digital Respiration Rate Meter

By | Published: September 28, 2009
An actual size, single side PCB for the respiration rate meter. The interface assembly simply make use of a nose mask, which is readily available in medical shops and mainly used in hospitals for supply for oxygen to the patients for respiration. Take a 36cm long transparent glass tube with inner diameter of 5mm. Insert a [...]
Posted in electronics, technology | Also tagged , , , , , , | Leave a comment

Batteries that charge within seconds

By | Published: September 28, 2009
Lithium ion batteries are the most common rechargeable batteries found in consumer electronics products. However these take a long time to charge. A new manufacturing method has been discovered that could lead to smaller, lighter lithium ion batteries can be charges in just seconds. The approach only requires simple changes to the production process of [...]
Posted in electronics, technology | Also tagged , , | Leave a comment