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Hall Effect Sensor 2.2 - 2.8V Quiescent Current
I am using the A1301KUA-T IC Hall effect Sensor. It operates at 5V dc and outputs 2.2 - 2.8 VDC as a Quiescent current. I will be using the magnetic pole that drops that voltage...
Friday, 16 September 2011 - 00:48
GPS sniffer any ideas?
I received a call from a friend that wanted to know if there was a detector available to sniff out a GPS that may be located in a car. I would think if there is no transmission...
Wednesday, 10 August 2011 - 00:19
Using an H-Bridge to switch 4 LED's
I am using Cree RGBW LED's 700ma per die in a project. I have a question on the voltage necessary to fully turn on the top two mosfets in the chip. Using the ZXMHN6A07T8TA 5VDC...
Saturday, 23 July 2011 - 15:28
Understanding 2 speed AC motor
This last winter my hot tub had to be drained as it blew a fuse and froze up the lines. Spring is here and I am rummaging through some old motors I have removed from other hot...
Monday, 18 April 2011 - 02:00
115V/220 motor wont start but runs fine if I give it a push
I bought this motor from surpluscenter. It is not used but I don't know when it was made. http://www.surpluscenter.com/ite... I connected it up and it just stalls when applying...
Sunday, 6 February 2011 - 07:40
Codevision Codewizard read_adc function Where is it?
I am setting up a 120 volt sequencing program to switch between 3 2000 watt heaters on one 20 amp circuit. I am using an allegromicro hall effect device that will generate a 60...
Wednesday, 26 January 2011 - 05:30
Calculating the Rt for a 1:100 20 Amp Current Sense Trans..
Hi, I am setting up an Aluminum anodizing line and I have three 20 amp heaters and one 20 amp circuit available. I tested the on time vs off time for one of the tanks and it only...
Monday, 24 January 2011 - 02:30
Building a driver for old tachometer gauges
Hi; I am working my way through the school of hard knocks. My self imposed project for today is to build a driver board for a tachometer gauge that has a coil and three inputs....
Thursday, 26 August 2010 - 03:07
Need some help with this thermocouple project
I have spent many hours on this and it almost works :) The problem I am having I think is the reading and sending of the received bits. The max6675 is being read by a tiny45 16...
Wednesday, 4 August 2010 - 16:51
Bypass Cap when two IC pins are close on board
I am building a machine that i will be using K type thermistors with Max6675 chips and attiny45's The idea is making a board with both chips using a one wire communication scheme...
Thursday, 29 July 2010 - 14:18
Need some help with a bit of code from the TUT's
From the Bit manipulation Tutorial, Peter has the following SBIT.H file. I am just started using CodevisionAVR (trying to move into C from assembler coding. Project would be done...
Wednesday, 21 July 2010 - 06:06
Driving the SLA7078MR Using an atmel chip of course
I have the chip on the breadboard ready to test but I am not clear on the timing diagram in the datasheet (attached SLA7070 page.pdf) To reset the chip the reset goes high for 2us...
Wednesday, 21 October 2009 - 06:04

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