Tue 22 Sep, 2015 01:44 am - I need 12 0 12 V 500/300mA transformer.But can not find a good one.Some got very hot even when secondory open or burn out.So plz refer me some name of company in india so that i can buy online in... (view)
Tue 15 Sep, 2015 11:33 pm - How can i calculate the power consumption of a circuit?
I have used a 12 0 12 V transformer 7812 voltage regulator in the circuit. The DC current drawn by the cicuit is 60mA.
Mains is 230VAC 50Hz (view)
Tue 15 Sep, 2015 08:13 am - how hot means it is difficult to touch for long after 30mins with no load(secondary open).
I have to use the transformer for 24×7 for my circuit(automatic water level controller).Is there... (view)
Tue 15 Sep, 2015 08:08 am - i have used a relay of 12 v and 6 LEDs for indication.that is why the current drawn by the circuit is more. and the transformer is of 12 0 12V center tapped 500mA.
Moreover with no load the... (view)
Tue 15 Sep, 2015 08:03 am - i have tried the test.but it still hot enough.But my problem is that i have buy 7 transformer of that type.but all of them give the same problem. (view)
Tue 15 Sep, 2015 05:59 am - ok ..
i have built an automatic water level controller circuit using 555 using it in bistable mode.I am using a 12 0 12 V 500 mA transformer in this circuit.But the transformer got too hot.The... (view)
Mon 14 Sep, 2015 11:18 pm - i use a 12 0 12 500ma transformer for automatic water level controller using 555.but the transformer gets hot.the current drawn by the circuit is about 60mA.how can i reduce transformer heat problem.? (view)
Sat 12 Sep, 2015 09:55 pm - I have build a water level controller using 555 bistable mode.but the relay givea tik tik sound when i touch the pin 4 of 555.what may the reason? (view)
