USB Serial Interface

There are many Serial Data Devices that means those that use the RS232 (old mouse port). USB is now the standard interface in most computers and embedded devices. Many mini embedded sensors and devices come with High Speed Serial Interfaces.

This page lists solutions and methods to get These Devices talking with your computer. The focus will be HandHeld Computers made of the Android OS. This way you can get your hand on the Real World thru USB and Serial. USB to parallel also helps when you want to control a Relay or Solenoid Array. Wireless Interfaces also are a good Solution with Networking.

FTDI Chips and Driver Solutions

USB TTL Serial Cables

The USB TTL Serial cables are a range of USB to serial converter cables which provide connectivity between USB and serial UART interfaces. A range of cables are available offering connectivity at 5V, 3.3V or user specified signal levels with various connector interfaces.

USB TTL Serial Cables

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About delabs

delabs Technologies is an online EE Resource centered around Electronics Engineering Technologies. The Focus is on Product Design, Instrumentation and Automation.

Electronic Engineering Companies. Like Test-Measurement, Semiconductors, Engineering/Manufacturing and Industrial Automation can Advertise in delabs to get valuable attention for their products and services.

delabs Circuits - Instrumentation and Industrial designs and Information.

Advertise in the delabs Pages and Tech Blogs - Advertising in delabs

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Embedded Systems Design

An Embedded Microcontroller or DSP system is made of Chips, Circuits and Firmware. The digital voltage levels, speed, bus width, fan out, power consumption are some factors that a designer has to keep in mind. As portable and wireless gadgets are becoming more popular, RF, Ethernet and Energy Efficient Design aspects should be studied. Power electronics and Analog Circuits knowledge is used around the system, all this is integrated to make an instrument, equipment or gadget.

 
Embedded Systems Design
 
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PIC Microcontroller

These are Tiny Chips that integrate the Microprocessor and Peripheral chips in a compact size with low power consumption. PIC Microcontrollers from Microchip are the evolved computing digital devices that go into many gadgets and intelligent equipment. These ar easy to program and reprogram and even protect your code or IP.

The PIC has the math power. The memory, the I/O ports are integrated in the chip like 8051. Some may remember that Microprocessors like 8085 and Z80 had all these functions in chips outside and used to consume more power. Then came CMOS and better IC technology. The 8051(now avr, atmega)and PIC Micro are entire boards in one chip.

PICkit 1 Flash Starter Kit of Microchip

The PICkit 1 FLASH Starter Kit is a low-cost development kit with an easy to use interface for programming Microchip's 8/14-pin FLASH family of microcontrollers. This starter kit is designed to help the user get up to speed quickly using PIC microcontrollers.

PICkit 1 FLASH Starter Kit

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MC7800 MC7900 1 Amp Voltage Regulators

These voltage regulators are monolithic integrated circuits designed as fixed−voltage regulators for a wide variety of applications including local, on−card regulation. These regulators employ internal current limiting, thermal shutdown, and safe−area compensation.

Linear Voltage Regulators - On Semiconductor 

With adequate heatsinking they can deliver output currents in excess of 1.0 A. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and current

MC7800 - Voltage Regulators 1A - On Semiconductor

Standard Voltages are - 5V - 6V - 8V - 9V - 12V - 15V - 18V - 24V

MC7900 - Voltage Regulators 1A - On Semiconductor

The MC7900 series of fixed output negative voltage regulators are intended as complements to the popular MC7800 series devices. These negative regulators are available in the same seven voltage options as the MC7800 devices.

Common ground is required between the input and the output voltages. The input  voltage must remain typically 2.0 V above more negative even during the high point of the input ripple voltage.

Current Boost Regulator - Postive

Current Regulator

Short Circuit Protection

 

Adjusrtable Voltage Regulator

 

All above circuits can be adapted to the negative 7900 regulators circuits. You have to remember PNP transistors are not used in the final output stages. NPN can take the heat and current loads. So it makes your Negative Regulator Boosters a bit complex.  The below two circuits have the 7900 regulators playing their negative roles.

 

Current Boost Regulator - Negative|

When a boost transistor is used, short circuit currents are equal to the sum of the series pass and regulator limits, which are measured at 3.2 A and 1.8 A respectively in this case. Series pass limiting is approximately equal to 0.6 V/RSC. Operation beyond this point to the peak current capability of the MC7905C is possible if the regulator is mounted on a heatsink; otherwise thermal shutdown will occur when the additional load current is picked up by the regulator.

 

Opamp Dual 15V Supply


The MC7815 and MC7915 positive and negative regulators may be connected as shown to obtain a dual power supply for operational amplifiers. A clamp diode should be used at the output of the MC7815 to prevent potential latch−up problems whenever the output of the positive regulator (MC7815) is drawn below ground with an
output current greater than 200 mA.

Switches in Electronics

Switches are electromechanical devices. The are used to control the  path of current or energy flow. Power switches are used to turn on and off loads. The contacts should be robust and have immunity to  sparking and corrosion. Switches for signals need to be gold plated for low contact resistance and within a sealed enclosure.

Switches in Electronics

A Neon bulb should have a resistor is series to make a Neon Lamp. All specs in designer viewpoint.

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Analog OpAmp Circuits

Operational Amplifiers With a few Op-Amps and a regulated Power supply, many Instrumentation and Process control equipment can be designed. The Human Brain understands Numbers, Quantity and it regulation very well ! On the right you can see a analog controller based on opamps and discrete devices. A Heater, Fan and Motor is regulated, controlled and timed for a process.

Learn this at my Industrial Process Control Circuits 

Analog OpAmp Circuits

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Most of my early life as a R&D Engineer, i have been in Analog. Here are design aspects of circuits using Op-amps and Comparators. Discrete Semiconductor Circuit design like using Transistors and Diodes. RLC parts. The related blog is my delabs Schematics.

Analog Design

Things related to Electronic Design in all its aspects. That includes the prototyping, mechanical, electrical and PCB. Product Safety, EMI-RFI, Reliability and Robustness. The related blog is here Design Gopher

Electronic Design

This Section is related to Microcontrollers and Related Resources. Microcontroller, SOC, FPGA, ASIC. From 80C31 to the Latest ARM chips will be the scope of this section.  The related blog is  here Hyper Embedded

Embedded Systems

Product Design - Industrial Automation and Instrumentation. delabs Technologies uses the brand names delabs and dapj in its Web Services and Resource Sites. These together form an Electronics Informatics and Product Design Technologies Web Consultatory. Updates are Here delabs SmartView

delabs Synergy Car

The design of Power Supplies, DC to DC and AC to DC Convertors, SMPS, High Voltage and High Current equipment. Mosfets, Thyristor, Schottky Diodes, Ferrite Magnetics and Chokes are the various components used. Power Electronics qt delabs.

 Power Electronics

 

Electronic Components and Engineering Materials. The parts, kits, tools that are used in designing and manufacturing electronic products. The Mechanical Nuts-Bolts and Raw Materials used in Electronic Manufacturing. The related blog - Components and Materials.

Electronic Components delabs