TinyLoad – Simple Electronic Load based on ATtiny45/85
https://www.electronics-lab.com/tinyload-simple-electronic-load-based-on-attiny45-85/
TinyLoad is a simple electronic constant current dummy load. The ATtiny measures voltage, current and temperature of the heat sink, calculates power, energy and battery capacity, controls the fan and displays all relevant data on the OLED. The button is used to switch between power/resistance and energy/capacity display. The electronic load control circuit, which essentially […]
ATtiny814 Power Analyzer
https://www.electronics-lab.com/attiny814-power-analyzer/
Not sure there is anyone on the internet who loves the Attiny series of microcontrollers as much as Stefan Wagner. We have explored a number of projects from him, from the USB power tester to the TinyRemote with ATtiny13, all based on a member of the Attiny series of microcontrollers. Going over his EasyEDA profile […]
Battery (Lithium, NiMH, NiCd) Capacity Tester Using Arduino
https://www.electronics-lab.com/battery-lithium-nimh-nicd-capacity-tester-using-arduino/
The increased interest in IoT and electric automobiles around the world is driving an increase in the use of Lithium-Ion/Lithium-Polymer/NiCd/NiMH batteries as more devices and applications are using them, due to their high energy storage capacity to size ratio. This increased interest is, however, causing an increase in the number of batteries with “fake” ampere-hours […]
New Low-Voltage, High-Side Load Switch
https://www.electronics-lab.com/new-low-voltage-high-side-load-switch/
Diodes Incorporated has announced the introduction of the AP22913, a 2A single-channel, slew-rate-controlled load switch with true reverse current blocking for high-side load-switching applications. Single-channel high-side load switches provide an effective way of applying or removing power to a load, particularly to removable peripherals powered through a USB port. The AP22913A load switch incorporates true […]
BatteryProtect makes your Battery Smart
https://www.electronics-lab.com/batteryprotect-makes-battery-smart/
Prevent your battery from charging non-essential loads with BatteryProtect. BatteryProtect is one of those smaller but much sought after products, one that is shipped in the many thousands. The latest version now has Victron ‘Smart’ tech. No more fiddling with wires to program, as the new Smart BatteryProtect uses VictronConnect over Bluetooth to simplify and […]
STPW12 – programmable electronic power breaker for 12V bus
https://www.electronics-lab.com/stpw12-programmable-electronic-power-breaker-12v-bus/
The STPW12 is an integrated electronic power breaker, optimized to monitor the input power. Connected in series to the power rail, it is able to disconnect the electronic circuitry on its output if the power consumption overcomes the programmed limit. When this happens, the device automatically opens the integrated power switch and disconnects the load. […]
Load switch with self-resetting circuit breaker
https://www.electronics-lab.com/load-switch-self-resetting-circuit-breaker/
Anthony Smith has designed a simple load switch using two transistors and some resistors. The simple current-limiting load switch shown in Figure 1 will be familiar to most readers. In this circuit, a high level signal applied to the input switches on MOSFET Q2, which energizes the load. The load current is limited by negative […]
Circuit delivers constant power to a load
https://www.electronics-lab.com/circuit-delivers-constant-power-load/
Kiril Karagiozov @ edn.com has a circuit idea that is able to deliver constant power to a load. This is done by generating energy pulses, independent of resistance of the load. If you have a load with a variable or poorly specified resistance and want to regulate the power applied to it (a heater for […]
UCload new PCB build
https://www.electronics-lab.com/ucload-new-pcb-build/
Sjaak has published a new PCB build, uC controlled dummy load: With no snow outside I finally got around to solder the 3rd PCB. It is the second revision of a microcontroller dummy load. It is loosely based on the arachnidlabs uc:load. It uses the same base ciruit and adds a microcontroller (PIC16F1825), rotary encode […]
How to test a power supply or solar system?
https://www.electronics-lab.com/how-to-test-a-power-supply-or-solar-system/
Electronic loads, programmable and with a recovery function are the best choice for dynamic testing simulating real conditions. Usually you don´t test your power supply and you assume it is working well with your equipment. But what if not? Sometimes your equipment fails without any evident reason and it might be because your power supply […]