Cadmium Sulphide Photo Conductive Cells

Introduction

A national research organisation offers a process for cadmium sulphide photoconductive cells. Cadmium sulphide photo cells are specially useful for applications in automatic street light control and. Other applications of cadmium sulphide photo cells are as follows :

Photo Relays :

Alarms of various types (visitor warning, burglar alarm, fire alarm etc) Control of various dimensions (for very fine wire length measuring instruments etc.) Safety device for optical product ejection Automatic switching of automobile headlights General automatic control (for autodoors, garage doors etc.)

Photography :

Exposure meter E.E (electric eye) camers measuring instruments.

Measuring Instruments:

• Illuminometer
• Germicide ray illuminometer
• Calorimeter
• Brightness meter
• Others such as pressure gauges
• Electronic Engineering:
• Contrast and brightness control for T.V. receivers
• Frequency counters
• Reading machines for the blind
• Noise free volume control
• Automatic voltage regulators
• Others such as logic circuits, input circuits, card puncher

List of Machinery/ Equipment:

• Water distillation column
• Air oven
• Muffle furnace
• Chemical balance
• Stop watch
• Sieves
• Stirrer electrically operated
• Soldering iron with pencil bit
• Megohm meter
• Multimeter
• Luxmeter

Electrical Industry, Electronics Industry

Total project cost - Rs. 6,02,000
Operational cost/year - Rs. 3,01,000
Machinery/equipment - Rs. 3,00,000

Production Capacity: 30,000 cells per annum

Inputs Required:

Raw Materials:Cadmium salt, thiourea pure, alkali, fluxing materials, ceramic substrate, sealants, transparent plastic container

Main Application: Energy

Contact:

Technology Bureau for Small Enterprises
APCTT Building, Qutub Institutional Area
P.O. Box – 4575
New Delhi – 110016, India
Tel.: 91—26864501, 26856276, 2696619/521
Fax : 91-11-26856274
E-mail : tbse@apctt.org