4 Transistor 500mW FM Transmitter Circuit DiagramAs shown, the audio ascribe is a microphone, which uses 2 x 2N3904 as the microphone audio preamplifier. The audio/mic ascribe akin is adjustable by agency of a 5k preset / potentiometer. The ambit uses a Colpitts oscillator for abundance generation, which is chargeless active and operates at the axiological abundance i.e....
Thursday, 20 November 2014
Class B audio amplifier based on TDA1553
Here is the circuit of a Class B audio amplifier based on TDA1553. TDA1553 is a monolithic audio amplifier class B, containing 2 x 22 watt amplifier in bridge configuration load attached. The amplifier operates from 12V DC and develops intentionaly for car audio applications. The IC also has a lot of good features such as short circuit protection, protection of the load dump,...
Auto Sound Systems are Becoming Entertainment Systems
If youve been shopping lately for an auto sound system then I am fairly certain that youve come across several full entertainment systems among those in the running for your audio and entertainment dollars. Vehicles today offer everything from DVD players, individual speakers, headphones (also individually adjustable), and even dual players that will allow one different audio...
Wednesday, 19 November 2014
Smart Tracker track anything from your child to shoes
The EPE Minder consists of two type- approved transmitter units and a receiver. If either transmitter becomes separated from the receiver, a buzzer in the latter part will sound. The receiver is fitted with a switch to allow the use of only one transmitter if required.MIND HOW YOU GOThis system was originally designed as a two-channel child alarm (to protect either a single child or two children at the same time) but many other applications spring...
NE555 IC Timer
The 555 Timer is an integrated circuit (chip) implementing a variety of timer and multivibrator applications. The IC was designed and invented by Hans R. Camenzind. It was designed in 1970 and introduced in 1971 by Signetics (later acquired by Philips). The original name was the SE555/NE555 and was called "The IC Time Machine".The 555 gets its name from the three 5-k Ohm resistors...
AT89C2051 microcontroller circuit
Real time controller AT89C2051Real time controller is a device used to exercise control over household device continuously ongoing and scheduled. The series of Real Time Controllers with microcontroller AT89C2051 which dituls in this article is a tool that can do that serve targeted. The series of Real Time Controller with Microcontroller AT89C2051 Atmel AT89C2051 uses a data...
Tuesday, 18 November 2014
Toggle switch with Infra Red IR
Toggle switch in this article is a series of toggle switches that are controlled by infrared light. The series toggle switch is made from a combination of data flip-flop CD4013 2 units. Receiver circuit of the infrared light signals arranged with infrared receiver as found on television remote receiver. Infrared signal from remote is used as clock signals and data to the data...
