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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.

Electronic Projects

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Categories
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Electronic Projects
370
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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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Radio Push-Button Micropower Circuit Using CD4011 NAND Gate
Radio push-button function is provided by a simple circuit using a CD4011 in a latch configuration
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Accurate, Adjustable SCR Crowbar Circuit For Overvoltage Protection Using TL431 Reference
TL431 provides accurate, adjustable voltage crowbar function for circuit overvoltage protection
5.00 star(s) 3 ratings
Updated
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Low Voltage, Low Power LED Constant-Current Driver Operates to Within 200mV of the LED voltage.
LV, LP, CC driver allows two alkaline or NiMH cells to steadily power a Red LED until discharged.
0.00 star(s) 0 ratings
Updated
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NiZn Battery Charger With Auto Cutoff Using LM317
Charger performs recommended charging function for rechargeable NiZn batteries
5.00 star(s) 3 ratings
Updated
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Simple, Multiple Sensor Intrusion Alarm With Arm and Entry Delays
Low parts-count circuit monitors multiple alarm switches, includes arm and entry delays
5.00 star(s) 1 ratings
Updated
Resource icon crutschow
LM317 12V Lead-Acid Battery Charger With 3-Step Auto CC/CV and Trickle-Charge
Lead-acid battery charger using LM317 provides auto CC charge, CV top-off, and final trickle-charge
5.00 star(s) 2 ratings
Updated
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Expanding on Simple Weight Scale
Weight Scale using SFE's OpenScale platform
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Simple Push-Button Power On/Off Circuit With Delay
PB latch circuit provides on/off delay function to prevent accidental power switching
0.00 star(s) 0 ratings
Updated
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PWM Input Constant-Current Circuit With 3-Pole Active Filter
Circuit combines PWM controlled constant-current source with 3rd-order filter using one opamp
0.00 star(s) 0 ratings
Updated
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Building a Simple Weight Scale 2018-08-12
Weight Scale built using SFE's OpenScale platform
0.00 star(s) 0 ratings
Updated
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Low Power PWM Stepper Motor Driver 2018-08-05
Stepper motor driver applies full voltage for fast stepping, then PWM for low power hold
0.00 star(s) 0 ratings
Updated
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Electronic Power Rheostat 2018-07-23
Circuit generates an equivalent high power resistance that can be adjusted with a potentiometer.
4.00 star(s) 1 ratings
Updated
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Radio Push-Button Micropower Circuit Using CD4049 Inverter 2018-07-18
A simple circuit using the common CD4049 to generate the Radio PB Function
0.00 star(s) 0 ratings
Updated
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output impedance experiments 2018-07-10
Damping factor, and how an amplifier controls voice coil motion.
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value 2018-06-01
Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
0.00 star(s) 0 ratings
Updated
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Battery - Accurate, Low-Voltage Cutoff To Prevent Complete Battery Discharge 2018-05-29
Circuit disconnects battery from operating accessories at a specific voltage to avoid dead battery.
5.00 star(s) 1 ratings
Updated
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Low Cost Alternative USB-to-GPIB Controller 2018-05-12
USB-to-GPIB Controller
0.00 star(s) 0 ratings
Updated
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Achieving Low Power on Adafruit Trinket 2018-05-12
Low Power on Trinket MCU
0.00 star(s) 0 ratings
Updated
Resource icon crutschow
Lead-Acid Battery Charger, 12V 6A, Using Hysteretic SMPS Circuit With Auto Float-Charge 2018-04-09
Simple, efficient, lead-acid battery charger auto switches from CC to CV mode
0.00 star(s) 0 ratings
Updated
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555 One-Shot Timer Has Zero Quiescent Power 2018-04-17
One-shot timer uses no power when quiescent, useful for battery powered circuits
0.00 star(s) 0 ratings
Updated

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