Object Countertop Essay

Subject Counter


This is certainly a useful circuit for different purposes. In this circuit a counter is definitely activated when a continuously offered light is been blocked. It uses a counter IC CD 4033. An LDR enhances the keeping track of process.

This circuit a great be used pertaining to various applications such as to count products going over a belt, and then for counting individuals passed at a point and many others

The task is done as being a prototype as well as its Real anybody can display a 3 to ten digit amounts and can depend unto countless numbers.



The routine is using an op-amp LM 311. The sensor circuit produced using LDR1 activates counter 4033. LDR1 has a level of resistance of 2. 2 kilo-ohms in daylight, which in turn drops beneath 50 ohms when beam falls onto it. (An LDR of nearly 2cm diameter has been utilized in this circuit. ) Comparator LM311 (IC1) compares the level set in pin 3 (nearly 6V, set using a 47k pot) with the level at pin 2 . When ever light is usually falling upon LDR1, the voltage is above 1V and IC5 has a low output at its pin 1 . When no light can be falling about LDR1, its voltage drops below 1V and IC1 output in its pin 1 becomes large.

The output in the Op-amp has as the time for seven segment counter-top 4033. The counter rely 1 for every high going pulse. The 4033 encodes the count number to display quantity in eight segment screen CE c5611


* ICs

* LM 311, Op-amp-3

* 4033seven segment rider counter-1


2. 10k-3

* 47k-1

2. 1k-1

* 470О©-1


* 47k

* LED-3

* LDR-1

* Seven segment screen CE c5611-1

* Power

* 9v Battery


2. LM 311

General Information

The LM111, LM211 and LM311 happen to be voltage comparators that have type currents almost a thousand moments lower than gadgets like the LM106 or LM710. They are also designed to operate over the wider variety of supply concentration: from common В±15V op amp materials down to the single 5V supply used for IC logic. All their output works with with RTL, DTL and TTL along with MOS circuits. Further, they will drive lights or electrical relays, switching concentration up to 50-VOLTS at currents as high as 40 mA. Both inputs as well as the outputs of the LM111, LM211 or the LM311 can be separated from system ground, plus the output may drive loads referred to ground, the positive supply or the unfavorable supply. Counter balancing and strobe capacity are provided and outputs can be wire OR'ed. Although sluggish than the LM106 and LM710 (200 natursekt response time vs . forty five ns) the devices can also be much less vulnerable to spurious oscillations. The LM111 has the same pin settings as the LM106 and LM710. The LM211 can be identical towards the LM111, only that its performance is specified over a в€’25В°C to +85В°C temperature selection instead of в€’55В°C to +125В°C. The LM311 has a heat range of 0В°C to +70В°C.


* Operates by single 5V supply

2. Input current: 150 nA max. above temperature

5. Offset current: 20 nA max. above temperature

* Differential suggestions voltage range: В±30V

* Power intake: 135 mW at В±15V

* IC 4033

CD4033BMS consists of a a few stage Johnson decade table and an output decodierer which changes the Meeks code to a 7 section decoded result for traveling one stage in a numerical display. This device is particularly beneficial in display applications in which power management low and/or low package count is important. A high RESET signal clears the 10 years counter to its no count. The counter is usually advanced 1 count at the positive clock signal change if the TIME CLOCK INHIBIT sign is low. Counter advancement via the time line is inhibited if the CLOCK PREVENT signal is definitely high. The CLOCK INHIBIT sign can be used being a negative-edge clock if the time line is usually held substantial. Antilock gating is presented on the MEEKS counter, hence assuring correct counting collection. The CARRY-OUT (Cout) sign completes one...