R&D CONTRIBUTIONS (1962 - 2020)
List shows some important products Aplab delivered to the country.
Almost all mentioned below are first time Indian design successes and serving the customers well.
My Teammates : L. S. Sannabhadti (45 yrs), R. N. Doss (35 yrs), B. N. Pal (18 yrs), U. V. Save (20 yrs),
Sanjay Bole (20 yrs), M. Dandekar (40 yrs), D. Choudhury (6 yrs) and many others
1.
1962 to 1972 ++
Sr. No.
Product
Some Users
1.
Four Solid State 'on-belt' Digital Batch Counters and Automatic Sorters for Bottle Caps. 'India Crown Cap Limited', Division of L&T – 4 systems.
2.
Optical Water Turbidity Meters for Suspended Turbidity. Sold over the years to Over 400 Water Treatment Plants in India.
3.
Four Station Laboratory Water Floculator.
4.
AC Defibrillator so most Thoracic (Heart) Surgeons in India (Developed in my last job). Cardiac Surgeons PK Sen, Datoor, SK Sen, Gopinath Vellore, Grant etc.
5.
Bedside Pacemakers (Developed in my last job).  
6.
0-30VDC/2A Regulated Power Supplies using Dry Battery Ref (No Zener invented yet). IITs, NPL, PRL, BEL, ITI, DRDO etc.
7.
Dual 0-300VDC/ 200mA & 0 to -150V Bias Laboratory Supply and Other Vacuum Tube PSU Series. Became a Standard Lab Supply in all Engineering Colleges and Labs in the Country for Vacuum Tube circuits.
8.
Servo-motor Controller Line Power Stabilizers 3 to 20kVA – jointly Automatic Electric.  
9.
0 to 70kV DC Test Set with 90kV 0.2µF Capacitor. Tata Electric, BHU, DESU etc.
10.
0 to 30VDC 10A Regulated Supply using Tracked AC Line from Dimmerstat. Tata Electric, BHU, DESU etc.
11.
Skin Contact Thermometer with Bead Thermistor for Peripheral Nerve Study. Several Dermatologists beginning Dr. BB Gokhale from Pune.
12.
Electro Convulsive Therapy Instrument. Many Neurologists for shock therapy.
13.
Bedside Cardiac Solid State Pacemakers. Cardiac Surgeons PK Sen, Datoor, SK Sen, Gopinath Vellore, Grant etc.
14.
Development of 150W DC Pulse Stepper Motor (with MG Bhat of Automatic Electric).  
15.
Variable Freq Low Distortion Audio Generator using Thermistor Bolometer. BEL, ITI, National Labs, Engineering Colleges, DLRL etc.
16.
Voltage Regulator meeting high environmental endurance military specs K114E. Supplied several hundred to Military through BEL (Replacing German Units from Siemens)
17.
500W Solid State 24V DC to 230V AC Transistorized Sine wave Inverter Meeting Environmental Military specs K114E (now DEF55555).  
18.
Solid state Ringer and Multi Tone Generators for Strowger Telephone Exchanges. Indian Telephone Industries; installed in 100s of Telephone Exchange.
19.
SCR Pre-regulated High Power Variable DC Power Sources. Industries, BEL, ITI, Universities, IITs.
20.
Defence Approved Vacuum Tube Valve Testers. 0ver 500 units over next 4 years.
21.
Impressed Current Cathodic Protection Systems for Frigates made by Indian Navy. All Indian Naval Frigates are Fitted with These Corrosion Protection Systems.
22.
Solid State Sine, Sq, Triangular, Saw tooth Function Generator with diode wave shaper. Many Research labs and colleges.
23.
Digital Frequency Counters with Nixie Tube Displays. TIFR, BARC, IITs etc.
24.
Publication of "Materials in Electronics " – by PSD. A comprehensive info on materials such as plastics, metals, alloys and chemicals and their processing technologies used in electronic production.
2.
1972 to 1982 ++
Sr. No.
Product
Some Users
1.
500W & 1000W Sine wave Linear Inverter with Class B Transistor Amplifiers Sold to Universities, National Labs and Government Electronic Establishments.
2.
20kVA UPS System using Three SCR digital Bridges using New TRC Developed Topology. Satellite Earth Stations of DoT.
3.
Started the First Electronics Monthly, "Electro-Technics" Devoted to Technology Development and Growth of Indian Electronic Industry. Produced and Sustained for Three Years; closed in 1974.
4.
Digital Computers Using 14 Vacuum Tube Amplifiers as Op-amps and Configuration Patch Board. NCL, all IITs, DRDL, ITI.
5.
First ever display of Indian Designed Electronics Products in Hannover Industrial Fair in West Germany in 1983- Participated Annually for the Next Decade. Started Export of APLAB products to Germany, UK and Sweden.
6.
Designed Aluminum Extrusions for Equipment Packaging Meeting German DIN Standards for 19” Rack Plug-ins – Changed the face of Aplab equipment. Progressively in all Instrument Housings in APLAB range.
7.
Adoption of German Standards like DIN in Product Packaging and Use of VDE Standards in Safety Compliance. EMI-EMC compliance. Resulted in high quality and reliability reputation for APLAB products in India & abroad.
8.
Development of LAB Series of Standard Single and Multi-output DC Power Supplies for German, French and British Market. This series survived for the next 25 years and is sold even today in good quantity.
9.
10MHz and 15MHz Single and Dual Trace Analogue Oscilloscopes. Sales in Domestic, UK and German Market.
10.
Developed Cable Fault Locator for Seba Dynatronics GmbH. Several thousand units exported to Germany for next 7 years. Also selling to DOT in India –over 3500 units so far.
11.
15" High 20ft long Electronic Audio-visual Scrolling Text Display using 6V DC Lamp Matrix Maharashtra Bank Pune Bldg and other customers in Bangalore and Delhi
12.
Established Export Unit in SEEPZ. The first company to export PSUs from SEEPZ at the hands of CM Maharashtra in 1975.
13.
Complete Range of DC Power Modules for India's First Digital Telephone Exchange being developed by Telecom Research Centre, New Delhi. Slow policy and material support killed this government initiative. This was much ahead of Sam Pitroda but Govt had least knowledge of what is happening worldwide.
14.
8080 Based Multi Application Micro-processor based Brain System for Analog & Digital Data Acquisition Industrial Control Division Made Products Using this Core. First Initiative in India for Micro-controller systems.
3.
1982 to 1992 ++
Sr. No.
Product
Some Users
1.
Combat Shooting Range - distributed intelligent control system for training of sharp-shooters for the training and evaluation of NSG commandos installed at Manesar near Gurgaon in 1987. Designed and developed signal activated targets with human face using solenoids to ‘fall’ on shooting, located on ground, field, on hill slope, tree top, in a train compartment, All set up controlled by a central computer and control centre. Used for Shooting Competitions for Prime Minister Trophy – developed in India instead of importing from Switzerland.
2.
Computer controlled Queue Management System for Banks. For better customer service.
3.
Self Service Terminal for Cheque Depository for Banks. Several hundred sold to various banks.
4.
SCCU - for remote supervisory monitoring of long distance telephone instruments. DoT and MTNL never liked the idea, privately citing 'sanctity of access to switch rooms' but could also not say No to it. The relevance of concept was proven by the subsequent large scale theft of telephone revenue which this product was supposed to ave prevented.
5.
Automated Teller Machine, ATM for Banks. Far advanced features than imported ATMs with features like local language display, customer record storage, voice assist for correct use, UL approved safe, user photo record. Ignored by banks since every tender asked for installed base – we still sold over 200 units.
6.
40GHz Microwave Frequency Counters. Telecom.
7.
Smart Card and Smart Card Chip Development – Aplab honoured as Pioneer of Smart Card technology. We developed smart card chip at Semiconductor Complex but used imported chip since we needed 0.3mm thick chip in 0.8mm thick ISO size card.
8.
Smart Card Operated Public Phones – A modern produce meeting international specs, attractive packaging and software to ensure full revenue. Several hundred installed in Delhi as a pilot project with a great success.
9.
20GHz Digital Counter.  
4.
1992 to 2002 ++
Sr. No.
Product
Some Users
1.
Developed first stored value smart card Public Payphone in India. 3000 installed in Delhi city and in Parliament...Ensured 100% revenue collection compared to 30% on the coin boxes. Growth was killed by DoT under Sukhram since we did not want to bribe.
2.
Exported 100 Smart Card Public Payphones to Belgium. Bulk contract lost due to lack of Government support to give project credit.
3.
Transfer of Philip Harris (Division of Findel, UK) instrument manufacturing facility to India for free. Indian production started in air-conditioned manufacturing facility in Aplab II. Export of equipment since 2001 till today – Rs.10 crores/yr in 2002 to 5 crores/yr today.
4.
Sine wave inverters up to 2 KW for the German railway/ Military application with Static switch & Manual Bypass arrangement up to 4.5 kW. Exporting to Germany.
5.
Programmable/ Non Programmable Active DC loads up to 5 KW: Dissipative current loads with CC/ CV/ CR/ CP mode of Operation.  
6.
Automated Test Systems/ Cassette Instruments: 19” rack mount programmable instruments for the automated laboratory testing consists of DC Calibrator, Signal Generator, Multi-meter, Relay multiplexors, counters in the 19”, 3U,1/6 rack cassettes. Powertronic GmbH, Zentro Electric GmbH, Megalab UK Limited, Megatron KG Germany.
5.
2002 to 2012 ++
Sr. No.
Product
Some Users
1.
Evolution thermal management of power electronic components. Optimisation, custom heat-sink profiles, compact, high density packaging.
2.
Zero up version power supply for power level from 200 W to 2.4 KW for the various output volt. India Market, BK Precision, Zentro Electric GmbH, Advance Power UK.
3.
Developed Automated Retail Fuel Dispensers with built-in computer for on-line data acquisition. Several Thousand Sold to IOCL, HPCL, BPCL and Exported to Africa.
4.
Medium Power switch mode Power Supplies: 19” rack mount 3U half rack module, single output power supplies using Forward converter Topology: Average Efficiency 88 to 90%.  
5.
Digitally Programmable Variable frequency variable voltage frequency converters.
& non programmable version up to 3 kW. (40 – 250 VAC & 45 – 450 Hz).
Domestic Market, Zentro Electric GmbH, Advance Power UK.
6.
Street Lighting Energy Savers. - 2.5 kW to 50 kW single phase & 3 phase lighting energy savers are designed for the high intensity lighting application. Singapore Govt.
7.
Power factor corrector up to 6 KW power supplies: Topology: Continuous Boost, One cycle control IC with the Silicon Carbide zero recovery diode for efficient control of the power factor.  
8.
1U High Programmable version of DC power supplies. (With RS232, RS485 and GPIB interface). SPIB (Specially designed for the multi-instrument serial communication). Exclusive Indian market, USA, Germany and European countries.
9.
High Power Density 1U high Telecom PSU -2.5kW/ 48V Li-Ion Battery Chargers for Electric Vehicles. India, Germany.
10.
Intelligent Energy Controller for PV Module -Energy Maximizer. We have Australian Innovation Patent issued in 2011.  
11.
Mumbai's first 30kW Roof Top Solar Power Plant in SEEPZ in 2011.  
12.
Several Hundred Roof top Solar Systems designed and supplied to Indian Railways.  
13.
Solar Pot - Intelligent Solar Energy Accumulator with MPPT, and Charge/ Discharge Level Controller.  
6.
2012 to 2020 ++
Sr. No.
Product
Some Users
1.
5kVA to 30kVA DSP controlled UPS System with Aplab developed SW with IGBT Rectifier for PFC with Auto-parallel.  
2.
Battery Charge Level Analyser – Clamp on Analyser to test battery condition and charge left in the battery.
 
3.
Defence Approved High Current DC Power Source. Indian Air force.
4.
Defence approved EMI-EMC limit compliant UPS Systems - 1kVA to 40kVA. Indian Armed forces.
5.
Parallel redundant, hot plug-in UPS System. Naval ships and Naval base.
6.
Self Service Terminal for Automatic Passbook Printer. 6000 units operational in field.
7.
External Digital Connectivity with RS485, GPIB, Ethernet for every type of AC and DC power sources.  
 
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