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You are the new chief PCB designer for a small company who are about to become heavily involved in the design and realisation of digital timing products. Your management wants to prove the path from design entry to final design data production. Consequently, your first task within the company is to take a design from concept through to completion. Given the nature of the company business, it has been decided the test design will be a digital clock, the block diagram of which is illustrated below. An additional requirement is miniaturisation and the board size should be as small as is practically possible.
Each of the elements can be realised from 7400-series TTL in SMD packages. The circuit below shows the internal components and connections for the divide-by-60 block above. The counters are 74160 and the 7-segment BCD is a 7447. Any additional information is readily available in data books and the internet.
Q. Draw the various characterstics of a DC shunt generator and explain critical resistance. Sol. Following are three most important characterstics or curves of a d.
simple project
what is equalizer ring
No-load and blocked-rotor tests are conducted on a three-phase,wye-connected inductionmotor with the following results. The line-to-line voltage, line current, and total input powe
Aims Exploring the analog output capabilities of the PIC trainer Write PIC assembly code to implement a simple multi-function signal generator Equipment PIC Trainer
What is extended data output RAM? EDO RAM: A slight modification to the DRAM structure changes the device in an EDO (extended data output) DRAM device. Inside the EDO memory, a
Give some applications of manganin. Manganin is alloy of nickel, copper and manganese. This is used shunts in measuring instruments, for making their coils and for making pr
Q. What is positive clipper? Give 2 types of its applications ? In the series positive clipper, when the input voltage is positive, the diode does not conduct and acts an open
Determine power reflection coefficient at the input port: For the MESFET equivalent circuit shown below, find S 11 and S 22 . Note that resistances associated with the voltag
Switching Characteristics Switching characteristics of BJT are shown in figure. Due to the presence of internal capacitances BJT cannot be turned instantly. Initially
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