Electronics

The Digital to Analog converter is an electronic device which converts digital signal to analog signal. Weighted Resistor and R-2R Ladder are its types.

We use small signal transistor model to analyze h-parameters. A transistor can be treated as a two port terminal.

The block diagram of a TV communication system consists of a TV transmitter and a receiver. The transmitter consists of two units.

The microprocessor 8086 minimum mode and maximum mode operation is decided by signal MN/MX’. When the signal MN/MX’ = 1 the 8086 minimum mode is active.

Boolean algebra which deals  with variables and binary numbers. This algebra helps to simplify the Boolean variables

The three basic transistor configuration are CE, CB and CC. A transistor is a three terminal device Emitter, Base and Collector.

Superposition theorem is applicable to circuits with linear elements. They are not applicable to power since it is a non-linear quantity.

Norton’s equivalent is obtained by source conversion of Thevenin’s equivalent circuit. The short circuit current is then given as Isc=Vth/Rth

The concept of data communication in GPRS is similar to the GSM network. GPRS has data rates of 9.6 to 171 kbps.