Projects

6-10W boost LED driver

Submitted by GG on Sun, 09/21/2014 - 19:30

ssr01 pth versionHigh power LEDs require a constant current power supply for optimal operation. GLED1 is designed to drive 10W white LEDs (9 diodes in series) from a 12V or 24V supply. The board can be used down to 3V but the maximum output power will be reduced in this case. The design supports discrete level dimming using a two or three way switch or continuous control using a PWM signal. The design is based on the ON Semiconductor NCP3065/3066.

Filed under: 
Vreg

PWR01 - Small and Efficient AC-DC Flyback Converter

Submitted by GG on Thu, 11/15/2012 - 18:06

PWR01 TopDespite the significant advantages in size, weight and efficiency, switching AC-DC supplies are not very common with hobbyist due to their complexity and scarcity of ready to build kits.
PWR01 is a low power (~6W) universal voltage (100-240V) isolated AC-DC flyback converter based on the ST Microelectronics VIPer17. Either 5V or 12V output can be obtained using an off the shelf transformer.

Filed under: 
AC
Vreg

G78xxHE - DC-DC converter module in a TO-220 footprint

Submitted by GG on Sun, 08/12/2012 - 14:02

G78 AP5100 Linear regulators from the 7800 series are often the choice for electronics hobbyists because of their ease of use, versatility, robustness and availability. G78xxHE is a very small DC-DC converter aimed to be a "drop in" replacement for the 7800 series regulators in TO-220 package. Thanks to its high efficiency the G78xxHE does not need to be connected to an heatsink even when delivering the maximum rated 7800 series current (1A) with large Vin-Vout deltas.

Filed under: 
Vreg

maxtc - Breakout board for Maxim SPI thermocouple sensors

Submitted by GG on Thu, 03/15/2012 - 10:15

maxtc bare pcb The Maxim MAX6675 and the newer MAX31855 thermocouple to SPI interface chips are very popular with electronics enthusiasts because of their extreme ease of use combined with good accuracy.
Both devices however are only available in SMD package making breadboard prototyping very difficult without using a suitable breakout PCB. Standard thermocouple connectors are also not breadboard friendly further aggravating the issue.

Filed under: 
MCU
Sensors

microjs - Freescale S08JS microUSB minimal system

Submitted by GG on Thu, 09/15/2011 - 19:42

microjs on a breadboard The freescale S08JS series is one of the lowest cost microcontrollers with a hardware USB implementation. The availability of free C development tools (SDCC and Codewarrior) make the S08JS a great candidate to develop all sorts of inexpensive USB gadgets. microJS is a fully functional S08JS minimal system on a PCB less than a square inch. The board headers can be plugged into a breadboard for prototyping or soldered to another PCB for a permanent placement.

Filed under: 
MCU
S08

Pages