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BGA soldering
Has anyone worked in soldering desoldering BGA chips?I think that this is the most difficult thing in electronics,but now the BGA chips are present in most modern electronic...
Monday, 13 January 2014 - 02:04
Electronic transformer
I am looking the most economical and lightweight way for a 12v dc power supply and as a thought comes to my mind to use an electronic transformer used for halogen lamps supplying...
Wednesday, 31 July 2013 - 20:48
Small motor current
Hello,in a small 12v drill motor the current without any load is 0.3A and as an overcurrent protection for the motor how much the current should be to save the motor from damage....
Thursday, 25 July 2013 - 23:57
About car battery
I would like to ask about a car battery that can not start the engine and applied cables from another car to help the car to start its engine,in this case the discharged battery...
Thursday, 31 January 2013 - 01:47
Analog comparator in tiny13
I intent to use a tiny13 as a buck mode car battery charger.My question is when analog comparator bandgap selection in AIN0 pin is internally connected,the PB0 pin can be used as...
Saturday, 1 December 2012 - 19:55
RSTDSBL and lock bits
In a tiny13 programmed with an ispmkii i want to use Reset pin as an ADC input and set lock bits to further programming and verification disabled. When i set lock bits the fuse...
Wednesday, 31 October 2012 - 23:27
Fan motor control
Is about a cheap room fan blower with a single phase motor and the difficulties to control it with an phase angle controller.When the speed is lowering more than the half the...
Friday, 12 October 2012 - 18:45
avr as RTC clocked from mains
I have done it many times in the past,an avr clocked from zero cross detection pulses used as a timer with long time interval with a very good timing accuracy.Now i intend to add...
Friday, 5 October 2012 - 23:27
Temperature controller
Sure there more than a million of them in the web,but i intend to make something my own. I would like to ask about the controlling method,to use an hysteresis for a relay on/off,...
Friday, 24 August 2012 - 19:32
about led display
I would like to ask if anybody knows if there are led display modules that all the digits share the same a..g bus internally connected,saving with this way the hardest part of...
Wednesday, 22 August 2012 - 00:13
Capacitive supply Vs economy
Transformerless power supply design seems that is an economy and more compact solution compared with a transformer.But there is not primary/secondary current,what flows in the...
Thursday, 23 February 2012 - 19:29
About Triac driving
Hello i just made a mcu driver dimmer with a tiny13 and to avoid the transformer and MOC optocoupler i designed the power supply with a capacitor and zener. The problem is about...
Tuesday, 10 January 2012 - 21:20

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