Comments for Vidyasagar Academy

Comment on How NPN transistor works? Tutorials of forward & reverse biasing of an NPN transistor by Chinmay Joshi

Chinmay Joshi — Wed, 04 Mar 2026 15:14:12 +0000

In reply to kitle. Very nice article. Thanks for it.

Comment on Arduino Course Software & Utilities by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Wed, 04 Mar 2026 14:52:14 +0000

In reply to Chinmay Joshi. Thanks for the wishes! Thanks again and again.

Comment on Arduino Course Software & Utilities by Chinmay Joshi

Chinmay Joshi — Wed, 04 Mar 2026 14:51:25 +0000

This is very useful page for downloading all types of necessary utilities related to Arduino experimentation. Thank you so much for the great collection.

Comment on How to register .edu domain in India? Complete guidelines by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Wed, 04 Mar 2026 10:11:40 +0000

In reply to Chandan. How can we help you? Your comment was blank. Without any reference. You just posted the url of your institute.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Wed, 04 Mar 2026 10:10:37 +0000

In reply to Amir Devali. How can we help you? Your comment was blank.

Comment on How to register .edu domain in India? Complete guidelines by Chandan

Chandan — Tue, 03 Mar 2026 18:44:04 +0000

What is the process for institutes?

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Amir Devali

Amir Devali — Tue, 03 Mar 2026 10:39:03 +0000

I have problem with raagini tanpura ,how to fix it if little battery discharge

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Sun, 01 Feb 2026 06:57:32 +0000

In reply to anikgomes410@gmail.com. Your comment is blank. Any queries to ask?

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by anikgomes410@gmail.com

anikgomes410@gmail.com — Wed, 28 Jan 2026 07:48:27 +0000

There is an ic without number i need to know if because the ic is not working

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Thu, 26 Jun 2025 13:13:27 +0000

In reply to Prahlad. It appears that the power button may be faulty. Try short circuiting it and check. Let me know for further development, here only.

Comment on How NPN transistor works? Tutorials of forward & reverse biasing of an NPN transistor by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Thu, 26 Jun 2025 05:48:54 +0000

Srinidhi https://vsa.edu.in/how-npn-transistor-works-understanding-forward-reverse-biasing-of-an-npn-transistor/#Concept_of_Transistor_Biasing

Comment on How NPN transistor works? Tutorials of forward & reverse biasing of an NPN transistor by Srinidhi

Srinidhi — Wed, 25 Jun 2025 03:41:51 +0000

One small correction required, for RR Biasing collector must be positive wrt Base here

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Prahlad

Prahlad — Mon, 23 Jun 2025 15:18:37 +0000

Hi sir I have a raagini digital which only has one knob. It does not turn on. I have opened it up and see a red light on the PCB. There is also current flowing to the touch board. But I am not able to turn it on when I tap the power button

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Sat, 07 Jun 2025 15:57:16 +0000

In reply to Manish Parikh. We already had a talk on this subject on phone. Thanks for showing interest in Vidyasagar Academy's posts of the website.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Manish Parikh

Manish Parikh — Thu, 05 Jun 2025 11:51:50 +0000

In reply to Dr. Dattaraj Vidyasagar. I have a 23 years old model , I opened the cabinet and the transformer has 12-0 written on the output side.However you are a better authority on the subject, please advise. On which number can I call you ? Timings?Thanks.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Mon, 02 Jun 2025 03:02:39 +0000

In reply to Manish Parikh. If you have read this comment, then it was for different module. Do not use 12V adaptor, if you have an old model.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Mon, 02 Jun 2025 02:59:14 +0000

In reply to Manish Parikh. Please contact us, we will talk on phone.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Dr. Dattaraj Vidyasagar

Dr. Dattaraj Vidyasagar — Mon, 02 Jun 2025 02:58:33 +0000

In reply to Charanjot Singh. You can call on our official cellphone number: +91 99-60-991-991 between 11AM to 01PM only.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Manish Parikh

Manish Parikh — Fri, 30 May 2025 14:37:51 +0000

In reply to Surendra Mujumdar. You are using 12v how many amperes adapter? Where do I need to connect the adpter socket leads on pcb ? Please let me know.Thanks.

Comment on How to repair Ragini Digital Tanpura and Tabla? Simple steps to repair it at home by Manish Parikh

Manish Parikh — Fri, 30 May 2025 01:48:55 +0000

My 15 years old model has stopped working after accidentally connecting mains to 110v socket instead of 220 as required here in Bangalore India..what could have possibly gone wrong? Replacing the transformer may help?