சுதர்சன் சாந்தியப்பன்

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If you are an exclusive BSNL broadband user, you might not have attached the telephone to the phone line.  I have connected my Netgear modem to the DSL/Phone line splitter and left the other connection floating.  Lately, when I noticed that the Netgear modem was not able to make the connection with BSNL servers, originally I thought the telephone line is dead.  To my surprise the telephone line was fine, but I perceived the lines to be little noisy.  I made a complaint to the BSNL portal and as usual nothing much happened.  Accidently, I had to connect my telephone to the splitter for making a local call.  To surprise, the Netgear modem managed to connect to the server this time.  So, the hypothesis is;

When the telephone line is noisy, attach the telephone to the splitter along with the modem connection to get connected to the BSNL Servers.  Most likely it could be because of the Reactive load offered by the telephone on the phone line ends up conditioning the Phase modulated signals for the Netgear modem to connect to the Servers.

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During Raining Days, BSNL broadband line gets little noisy. I used to connect only my router and never my land line phone in the phone line as I use the BSNL telephone line only for Internet access. Lately, I noticed that the Netgear router having difficulty in establishing connection with the BSNL server whenever it was raining or the phone line is noisy. The “i” indicator keeps blinking in ORANGE color and never stabilizes into a GREEN color indication. Having the “i” indicator blink made sure that the link exists. When I wanted to check the condition of the link (telephone line connection), I connected the BSNL telephone to the splitter port which splits the telephone line to the router and the telephone. When I lifted the cradle, I could notice that the telephone line is little noisy. When I was wondering when and how to make the complaint to BSNL, surprisingly the Netgear router made a stable connection with BSNL gateway. I have used this hack several times, whenever the router (modem) had difficulty in establishing connection.

One theory behind this could be the “loading” effect of the telephone on the telephone line which is subsiding the noise ripples coming over the telephone line.

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I continued by search in the street and ended at “Switchgears India”, 149/2 Thambu Chetty Street, Chennai 1 and enquired about timer controllers.  He immediately showed me a product which he claimed to be useful for industrial timed switching purposes.  The guy should be Rajesh Bhandari (9840133670).  He showed me the product named “Frontier Timer TM-619H-2″, which had 8 On and Off timers.  There was another engineer who was sitting there helped me in configuring the timer.  When I tried setting the times, I found it very versatile and immediately useful.  They priced this product at Rs 600 without bill or warranty.  The shopkeeper promised that the product is doing well and he had sold over 1000 pieces.  This product also comes with an internal battery for keeping up with the LCD display and clock feature.

The product showed that it can switch on a 2HP motor directly, which I did not believe.  I guess the internal switching is by a TRIAC semiconductor which may burn out if connected directly to an Inductive load like water pump motor.   The shop keeper insisted me to get a Contactor which is typically a Electro Magnetic Relay to do the switching of the pump.  I asked him to offer a product and he gave me a contactor namely “IDEAL ID1-22 1a1b AC220V 50Hz”, which by the spec should be able to switch even a 5 HP motor.

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மின் விசிறி ஓடாததற்கு பல காரணங்கள் இருக்கக்கூடும். சிலவற்றை இங்கே காண்போம்.

1. துண்டிக்கப்பட்ட மின் இணைப்புகள்
   1. ஒரு அசைவும் இருக்காது
   2. டெஸ்ட்டர் கொண்டு சோதனை செய்ய வேண்டும்
   3. மின்சாரம் இல்லையெனில் மெயின் போர்டை சோதிக்க வேண்டும்
2. செப்பு கம்பி சுருள் துண்டிப்பு (காயில்)
   1. தீயும் நாற்றம் அடிக்கலாம்
   2. கம்பி சுருளை மாற்ற வேண்டும் (செலவாகும்)
3. தொடக்க கபாசிட்டர் வேலை செய்யாதிருத்தல்
   1. சிறிதாக ஒரு அதிர்வு இருக்கும்
   2. முன்னும் பின்னுமாக விசிறி சுழல முயற்சிக்கும்
   3. கபாசிட்டரை மாற்ற வேண்டும்; 2.5 MFD/400V; சுமாராக 50ரூ இருக்கும்
4. பால் பியரிங் தடங்கல்
   1. சிறிதாக அல்லது பெரிதாக அதிர்வுகள் இருக்கும்
   2. தீயும் நாற்றம் அடிக்கலாம்
   3. மிக சூடேரும்
   4. பியரிங்கை மாற்ற வேண்டும் (சோடியாக மாற்றுவது சிறந்தது)