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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

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  • How to operate an A7672S 4G modem with a computer

    Resource 'How to operate an A7672S 4G modem with a computer'

    by Nikhil Angnihotri, EngineersGarage.com As 5G is in full swing in the telecom segment, 4G modems are fast occupying the embedded space. The 4G GSM modems are useful in embedded systems for several reasons. 1. They provide a high-speed wireless connection to the internet. This allows embedded systems to access and process data in real time, which is essential for telematics, industrial automation, and remote monitoring applications. 2. The 4G GSM modems are relatively compact and...
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Single Supply Non-Inverting Av=1 Op Amp Circuit With Simple Offset Voltage Calculation 2017-02-08
Circuit generates Av=+1 with simple offset calculation using std. resistor values
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Simple PWM Circuit For Lamp Dimming, etc., Improves On 555 PWM Circuits 2017-01-29
PWM circuit has voltage control of 0% to 100% duty-cycle
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Isolated Input, MOSFET AC/DC Solid State Relay (SSR) 2017-01-03
Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
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Component Salvaging Using Rework Stations 2016-12-31
Rework Station, Component Salvage
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Bipolar AC/DC MOSFET Low-Side Switch 2016-11-07
AC/DC Low-Side AC Switch With Low ON Resistance Uses Two N-MOSFETs and One PNP Transistor
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Core Components 2016-11-01
Which components do you need to get started in electronics?
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Restore Your Valuable Documents- or Make Your Own Book 2016-05-13
Document repair and book binding arn't that difficult
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Both Sexes for the Price of One: PMCPB5530 complementary MOSFETs 2016-03-31
Low gate threshold independent n type and p type MOSFETS in a low cost minature pakage
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Game Changer Opamp: OPAx192 and Relations 2016-02-25
This new opamp form TI comes close to the ideal and opens up a wealth of design avenues
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Push Button On/Off, Low Quiescent Power, High-Side MOSFET Power Switch 2015-10-15
Simple high-side switch requires only two active devices and a few passive parts
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Radio Push-Button Micropower Circuit Using Two Common ICs 2015-08-25
Two common ICs generate the Radio PB Function for up to 8 PBs, (16 PBs with 2 additional chips).
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8-Digit Numeric LED Display 2015-07-09
A display driver module for 8 digits with only 9 lines.
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Simple PWM control 2013-01-17
Here's a simple PWM control circuit using inexpensive readily-available components. [ATTACH=CONFI
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Game Show Circuit 2014-06-26
"Jeopardy"-like circuit
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Auto Ah Capacity Tester & Logger for 12V lead acid Batteries 2014-05-04
Safe, autonomous Ah capacity testing with auto shutdown & recharge option.
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Resource icon Val Gretchev
Constant Current Diode 2014-04-03
A component that is often overlooked.
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Resource icon Val Gretchev
Obscure but Interesting Circuits 2014-04-01
Having fun with logic gate circuits that may be useful.
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FORWARD & REVERSE, VARIABLE SPEED MOTOR CONTROLLER 2014-01-10
FORWARD & REVERSE, VARIABLE SPEED MOTOR CONTROLLER WITH POTENTIOMETER
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PWM pulse generator 2013-09-03
This is the base design (not a full working drawing with pin-numbering etc) for a simple PWM pulse
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Resource icon alec_t
Brushless DC Motor Speed Controller 2013-02-14
A simple, cheap, BLDC motor controller using readily-available components is described. Most previ
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