Circuits & Schematics Microchip - 4

31. PWM circuit uses fuse to sense current
    Eugene Kaplounovski
    Circuits Supply Power Microchip MIC5021
    High efficiency and, hence, low loss is a usual design goal for a PWM circuit. Figure 1 shows one of several channels of low-loss PWM control for hydraulic valves used in heavy industrial machinery. These valves usually have dc resistance of ...
    Nov 8, 2021
32. Circuit folds back current during fault conditions
    Martin Galinski
    Circuits Measurement Supply Microchip LM4041 MIC5159 MIC7221
    You can use monolithic linear regulators at currents lower than 5 A for most applications. Most manufacturers of these devices integrate current-limiting and thermal shutdown to prevent damage during fault conditions. For currents greater than 5 A, ...
    Nov 3, 2021

33. USB Phone Charge Guard
    Stefan Wagner
    Circuits Arduino Supply Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
    The ATtiny45/85 USB Phone Charge Guard controls and monitors the charging of phones and other devices (Figure 1). Voltage, current, power and energy are constantly measured via the INA219 and compared with the user limit values. It cuts off the ...
    Sep 21, 2021
34. TinyCharger - Single Cell Li-Ion Battery Charger with Monitoring
    Stefan Wagner
    Circuits Supply Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
    TinyCharger is an ATtiny25/45/85-based, single-cell Li-ion battery charger with selectable charging current limit (100 mA - 1000 mA) and an OLED display for monitoring. For Power Connecting device is equipped with a Micro-USB and a USB-C connector ...
    Aug 19, 2021
35. TinyCalibrator - OSC Calibrator and High-Voltage Fuse Resetter
    Stefan Wagner
    Circuits Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
    Because the 8-pin ATtinys only have a few GPIO pins available, they are usually operated without an external clock. The internal oscillator does a good job in most applications, but when it comes to precise timing, its 10% accuracy is often ...
    Aug 4, 2021
36. A simple and fully automatic, 12V uninterruptible power supply system for small/medium power appliances
    Circuits Supply Microchip PIC16F688
    Motivation This is a simple and fully automatic, 12 V uninterruptible power supply system for small/medium power appliances (Figure 1). This power supply specifically designs to drive routers and modems to provide uninterrupted internet and ...
    Jul 22, 2021
37. ---
    Circuits Analogue Design Microchip 2N7000
    Jul 6, 2021
38. Depletion-mode MOSFET kick-starts power supply
    Gregory Mirsky
    Circuits Supply Microchip DN2470
    Many switch-mode power supplies use “kick-start” circuits to initialize their offline operation. These circuits may be simple resistors, such as IRIS4015 , or more complicated arrangements built with bipolar transistors or MOSFETs. ...
    Jun 10, 2020
39. Self-Calibrating USB Voltage/Current Meter
    Circuits Measurement Microcontrollers Usage Microchip ATtiny13A
    Tirdad Sadri Nejad Hackster.io With a code size of 1 KB on an ATtiny13A MCU, this tiny module measures voltages up to 22 volts and current up to 5 amps. There are a lot of so-called USB doctor modules which are used for monitoring currents flowing ...
    Mar 26, 2020
40. Stand-alone Inductance Meter on PIC16F1936
    Circuits Measurement Microchip PIC16F1936 Atmega328
    Lukas Fässler soldernerd.com Some of you may have seen my arduino-based inductance meter in the article [1]. The arduino-based meter works well and made a great proof-of-concept. But for everyday use you’re probabely not looking for an ...
    Aug 21, 2018

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