A good power supply is an essential subject to the microcontroller’s base project; it’s like a heart that gives a life to our microcontroller. Sometimes we take it for granted the important of having an adequate power supply to our microcontroller project and this can lead to the unexpected result or behavior from the circuit. […]
Powering Your Microcontroller’s Base Project Read More »
Linear Technology has put the whole of a supercapacitor power back-up system on one chip. Rated at 2A, it will back-up a voltage rail (Vsys) between 1.71 and 5.25V. Key to the chip, called LTC3110, is a 1.2MHz four-switch bi-directional dc-dc converter that both charges the capacitor and can also extract almost all of the
LT puts supercapacitor power back-up on a chip Read More »
Features Enhanced Mid-Range Core with 49 Instruction, 16 Stack Levels Flash Program Memory with self read/write capability 256 Bytes of EEPROM Internal 32MHz oscillator 3 x PSMC (Programmable Switch Mode Controller)- Dedicated 16bit PWM- Digital and/or analog feedback control of PWM frequency- Dead-band control / auto-shutdown & restart 4 x Fast Comparators with selectable Voltage
In this post we introduce simple and flexible, regulated low voltage power supply unit. This power supply has provision for 4 outputs such as 1.5V, 1.8V, 2.5V and 3.3V. We mainly build this low voltage power supply unit to test (and power-up) low voltage MCUs, CPLDs and radio receivers. For this power supply we choose
Low voltage power supply unit Read More »
The Internet-of-Things Power Meter (IPM) is a device fixed on top of the regular household power meter that provides detailed information about the electricity usage. Modern power meters have a LED blinking every time a Watt is used, the IPM detects these flashes using a light sensor, counts them, saves the values to an SD
Internet-of-Things Power Meter Read More »
This is a very simple and accurate power guard circuit. This circuit is useful to guard the electronic or electrical devices from mains transients and spikes. Very high spikes can develop at power on due to sparking in the switch and more serious effects occur when power resumes after a power failure due to high
Simple Power Guard – PIC12F683 Read More »
Many a times equipment at workstations remains switched on unnoticed. In this situation, these may get damaged due to overheating. Here is an add-on device for the workbench power supply that reminds you of the power-on status of the connected devices every hour or so by sounding a buzzer for around 20 seconds. It also
Power-on Reminder with LED Lamp Read More »
In this article, I would like to talk a little bit about LEDs, including why they will become the lighting source of choice, how to power them and also, how to protect them from the hazards they face within their respective implementations. These include high bay lighting, architectural lighting, outdoor street lighting and even 75W
Linear Tech on how to power LEDs and protect them Read More »
Features Bidirectional Synchronous Boost Capacitor Charger/Buck Regulator for System Backup Wide Input Voltage Range: 3V to 17V Up to 40V Capacitor Voltage Storage for High Energy Backup 2A Maximum CAP Charge Current Integrated Power N-Channel MOSFETs (150mΩ Top and 75mΩ Bottom) Integrated Power N-Channel MOSFET for Output/CAP Disconnect (50mΩ) Input Current Limit During Charging Fast 1MHz Switching Frequency
LTC3643 – 2A Bidirectional Power Backup Supply Read More »
Step 1: Understanding the circuit The circuit is really easy to understand. A resistor of low value (the resistor value will be explained later) is connected in series with the output of the power supply. As current starts to flow through it, a small voltage drop will appear on it and we will use this
Short circuit protection for (almost) any power supply Read More »
