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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.

Power Supply

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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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Simple 15V, 1.5A, CC/CV Bench Power Supply Circuit - (With Optional Laptop Charger Source) 2018-02-05
Inexpensive, single regulator IC power supply with I and V adj. to zero, includes I & T monitors
5.00 star(s) 1 ratings
Updated
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Simple & Inexpensive Ideal-Diode MOSFET Circuits 2017-09-19
Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
4.50 star(s) 4 ratings
Updated
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LM317 CC/CV 12V Lead-Acid Battery Charger With Automatic Trickle Charge 2017-06-18
Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
0.00 star(s) 0 ratings
Updated
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Triple Output Tracking Power Supply Uses Standard 3-Terminal Regulators, Adjusts to Zero Out 2017-03-09
Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
0.00 star(s) 0 ratings
Updated
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Efficient MOSFET Bridge Rectifier for Resistive Loads, Or Input Power Auto Polarity Gating 2017-03-07
MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
0.00 star(s) 0 ratings
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PWM Voltage Control Of Standard Linear IC Regulators 2017-02-13
PWM allows easy control of linear regulator output voltage for μP based power supplies
0.00 star(s) 0 ratings
Updated
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Simple, Efficient, Inexpensive, High-Power LED Constant-Current Switching Supply 2017-01-25
Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
0.00 star(s) 0 ratings
Updated
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MOSFET Bridge Rectifier With Low Forward Drop, Works With Capacitive Output 2017-01-16
MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
0.00 star(s) 0 ratings
Updated
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LINEAR POWER SUPPLIES: THEORY & CIRCUITS 2017-01-10
Linear power supply core theory plus circuits that can be adapted to suit your application
0.00 star(s) 0 ratings
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Precision Micropower Battery Cut-off Circuit 2016-11-23
Simple micropowr circuit to protect batteries from under voltage
0.00 star(s) 0 ratings
Updated
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Standard Three Terminal Regulator Adjusts Down to Zero Volts 2016-11-20
A simple circuit to get down to zero volts with a standard three terminal regulator
0.00 star(s) 0 ratings
Updated
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Two Different Full-wave Rectified Voltages From Center-tapped Transformer and Bridge Rectifier 2016-08-01
Two voltages, one twice the other, require only a center-tapped transformer and bridge rectifier
0.00 star(s) 0 ratings
Updated
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Electronic DC Fuse - Simple Two Transistor Circuit 2016-04-07
Electronic Fuses eliminate fuse replacement and current-limit short-circuit power dissipation
0.00 star(s) 0 ratings
Updated
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Main-Slave Controller 2015-12-09
Circuit to turn a secondary device on automatically when the main device operates.
0.00 star(s) 0 ratings
Updated
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The simplest constant current limiter with 'load indication' 2015-09-02
A very simple constant current limiter circuit with a tricky load indicator
0.00 star(s) 0 ratings
Updated
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Dual Regulated Supply from Single Voltage 2014-05-28
Dual +/- Regulated Supply from Single Floating Voltage source Using Two Identical Regulators
0.00 star(s) 0 ratings
Updated
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LM317 Adjustable 20V, 1.5A Supply with Simple SMPS Tracking Preregulator 2015-04-14
LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
5.00 star(s) 1 ratings
Updated
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High-Side Current Source with Differential Inputs 2014-09-22
Generates constant current to a grounded load as determined by the differential input voltage
0.00 star(s) 0 ratings
Updated
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Reverse Protection of Input Power with Low Voltage Drop 2014-04-03
Prevent damage from accidental application of reverse voltage with minimal normal voltage drop.
0.00 star(s) 0 ratings
Updated
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Adjustable Low Drop Current Limiter 2014-03-28
Current limiter with max voltage drop of ~1V during normal operation, minimizing dropout voltage.
0.00 star(s) 0 ratings
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