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Saturday, February 02, 2019

Whence Input Hence Output

If Inputs are Distorted, The Outputs are Noisy.
Even if the Amplifier is Very Good.

If Raw Materials are of Poor Quality, The Finished Goods are Defective.
Even if the Process and Machinery is State Of The Art.

If the Specifications are incomplete, The Prototype will be rejected.
Even if the Design and Tools are Perfect.

Whence Input Hence Output - delabs

EE Design Library - Electronic Product Design Resource.

2002 - delabs Notes

Engineering the Technology Management

Sometimes even Management has to be Engineered to help it change its ways of thinking in a world that is fast changing. A Planet that is defined by the Consumer or Customer more strongly than any other factor.

Technologies should scale with Infrastructure. Buildings cannot stress the Foundations meant for. Traffic proportional to Road Width. Sync

Technology Management

Raw Materials - Components - Finished Products. The Entire Processing and Design Chain has to improve, if the final Product has to Shine.

Let us use more of our Brain than Brawn, Quality; Reliability & Safety will see a Dawn.

High Value Engineering

In Engineering High Value products are those that are a combination of Precision Mechanical + Electrical + Analog + Embedded Microcontroller.

Study and Learn ?? Examine and Experiment >> Analyze and Establish [o] Realize !!

delabs EE Design

delabs Notes - 2002

Friday, February 01, 2019

Materials and Inventory Management

The Inventory of a Firm should be Open within an Organization. Searching with a browser, Integrateable with departmental webware/intranet. With a very easy readable non-programmer friendly API.

Components Parts Kits and Materials

The Search must be based on Multiple Keywords, Filters or Tags. Dormant Inventory and Parts/Equipment/Furniture not on any live project anymore, Excess Inventory and Obsoleted Parts due to Tech Advancement; should be flagged. This enables other departments to use it, consume it for Maintenance or Research projects or integrate into new designs if not-obsolete.

Materials and Inventory Management

If found to be valueless, damaged or worn-out by all departments and responsible engineers, then inventory should be sold or given away. The Employees can be the first customers for an inhouse Corporate Garage Sale. An un-organized, complexly-computerized and non-transparent/blocked Stores will end up in a Flea Market.

Monday, January 07, 2019

RCA - Radio Corporation of America

The Professor, Talking Machine, Wireless Becomes Radio, Color Television, Nipper and Chipper and More RCA History at....

The Wayback Machine snapshot of RCA History.

Guglielmo Marconi, an Italian electrical engineer, transmitted the first wireless signal in 1895. By the turn of the century he had formed telegraph companies in England and opened the first wireless office in New York City. In 1901, Marconi telegraphed the letter "S" across the Atlantic Ocean. The U.S. Navy was so impressed that it replaced a flock of carrier pigeons with the "wireless" for ship-to-shore communications.

RCA - Radio Corporation of America

Two years after inventing the phonograph, Edison brought the world the incandescent light bulb. Thirteen years later, his start-up electric company would merge with the Thomson-Houston Electric Company and be renamed General Electric.

The Timeless Performer - 555 IC Chip

The Incredible 555 : Here are some 555 circuits, The most versatile and simple chip of all time !

Some of my 555 Circuits are at my blog - 555-Circuits - delabs Schematics

The best part of the 555 is that it has an voltage detection. It has a Versatile Logic which is defined by voltage comparators. The ability to loop it like an opamp for feedback makes it the first "Programmable" Mixed Chip. In short it make an ideal building block.

555 The most Incredible Chip - At my Learning-Teaching Blog Solderman Basics.

Signetics made the 555, This is one IC that is like a E-LEGO, this along with Op-Amps and other components can make many interesting projects. On some pins like Control Voltage it responds to analog signals and on Reset and Output the signals are Digital like. The 7555 a CMOS version consumes lower power and oscillates at higher frequencies.

555 Timer Circuits at delabs



555 Timer based Circuits

Friday, January 04, 2019

Open Source Android Oscilloscope

An android virtual instrument - OsciPrime is an Open Source Android high speed data acquisition hardware platform and Android oscilloscope application.

Open Source Android Oscilloscope

OsciPrime data acquisition

Using USB, the hardware plugs into Android devices that support USB Host. Together with the OsciPrime Android oscilloscope application it turns a tablet or mobile phone into a high speed data acquisition system.

Open Source Android Oscilloscope

Hardware Specs:
  • 2x Analogue Input @ 8bit/6Msps
  • 5 analogue gain levels
  • 3.3 MHz - 8.0 MHz Bandwidth (gain dependant)
  • 16 V Max Input Voltage
  • 880 mW Power Consumption
  • Designed for 10x Probes
The Android App Instrument Performance and Controls Include

Controls -V-Offset, Time-Offset, Calibration; Trigger Controls Falling/Rising and Edge, You can Measure Voltage, Freq and Period.  
  • Range +/- 1.5 V up to +/- 16 V
  • 5 us/Div max - 1 ms/Div min 
  • Processing 400'000 samples per second

Thursday, December 06, 2018

Non Inverting Amplifier - Op-Amp Designs

The input impedance of this module is very high, if U1 is OP07 it is in mega/giga ohms, use CA3140 or LF356 fet input opamps to get 1 tera ohm input impedance, but for high gains OP07 is better as it is ultra low offset. This is a good amplifier for sensor outputs, as it is a DC Circuit.

Non Inverting Amplifier - Op-Amp Designs

Non Inverting Amplifier - Op-Amp Designs

The zener diodes protect the opamp inputs, R1 limits current during high voltage inputs and R1 and C1 form a filter to remove some ac components, C1 should be a plastic type as ceramic and electrolytic caps are leaky.

Non-Inverting Opamp

A large C1 will slow the response time, the sum of Ri + Rf should be greater than 5k so that output is not loaded. Do not connect output to voltages more than vcc/vdd, it will blow Opamp.

Tuesday, December 04, 2018

LED Running lights CD4017

This Demo shows LM555 running a CD4017 Counter to drive Ten Leds sequentially. Red Button Powers LED Running Lights, 555 Clock is counted by CD4017. Adjust R2, See ToolTips.

Screenshot of gadget

LED Running lights CD4017

This is a Gadget Tutorial for this Article LED Running lights CD4017.

Press the Red button below to turn on the circuit press it again to turn off, i have put a new battery and did the wiring for you. The Red LED will flash according to the state of the 555 output at pin 3. The decade counter-divider CD4017 has 10 outputs, for every low to high transition, rising edge, the counter advances one LED. After going one full circle the the first LED lights again and it goes on.....

delabs Tech