Privacy Policy

Effective Date: December 26, 2025
Last Updated: January 19, 2026

Introduction

Welcome to Transformer4U (transformer4u.com). This is a personal educational blog operated by an individual (Tan). I am committed to protecting your privacy and being transparent about how I handle information when you visit this website.

By using this website, you agree to the collection and use of information as described in this policy.

1. Information I Collect

1.1 Information You Provide Voluntarily

  • Email Address: When you contact me via email
  • Name: If you choose to provide it when contacting me
  • Message Content: Any information you include in your emails or comments

1.2 Automatically Collected Information

  • Log Data: IP address, browser type, pages visited, time spent on pages, referring website
  • Cookies: Small data files that help improve your experience
  • Usage Data: How you interact with the website content

1.3 Third-Party Services

This website uses:

  • Google Analytics: To understand how visitors use the site
  • Google AdSense: To display advertisements (helps support this blog)

2. How I Use Your Information

I use the collected information to:

  • Respond to Your Emails: When you contact me with questions or feedback
  • Improve Content: Understanding what content is most helpful to visitors
  • Website Analytics: Analyzing traffic patterns to improve the site
  • Display Ads: Showing relevant advertisements through Google AdSense
  • Maintain Security: Protecting the website from abuse and unauthorized access

3. Cookies and Tracking

3.1 What Are Cookies?

Cookies are small text files stored on your device that help websites function better.

3.2 Cookies Used on This Site

Essential Cookies:

  • Required for basic website functionality
  • Cannot be disabled without affecting site performance
  • Session management and security

Analytics Cookies:

  • Google Analytics to understand visitor behavior
  • Help me improve content and user experience
  • Can be disabled through browser settings

Advertising Cookies:

  • Google AdSense for displaying relevant ads
  • May track browsing behavior for personalized advertising
  • Can be controlled through Google Ads Settings

3.3 Cookie Consent

Upon your first visit, you may see a cookie consent notice:

  • You can accept or manage cookie preferences
  • Essential cookies are necessary for website functionality
  • You can change your preferences at any time through browser settings

3.4 Managing Cookies

You can control or delete cookies through your browser settings:

  • Chrome: Settings > Privacy and security > Cookies
  • Firefox: Options > Privacy & Security > Cookies
  • Safari: Preferences > Privacy > Cookies
  • Edge: Settings > Privacy > Cookies

Note: Disabling cookies may affect some website features.

4. Google AdSense & Advertising

This website uses Google AdSense to display advertisements, which helps support the blog.

4.1 What This Means

  • Google uses cookies to show ads based on your browsing history
  • Ads may be personalized based on your interests
  • Third-party vendors may use cookies for ad serving

4.2 Your Advertising Choices

4.3 Third-Party Advertisers

  • Advertisers may use cookies and web beacons
  • I do not control these third-party technologies
  • I am not responsible for advertiser practices or claims

5. Google Analytics

I use Google Analytics to understand how visitors use this website:

  • Pages visited and time spent
  • Geographic location (country/city level)
  • Device and browser information
  • Traffic sources and user flow

5.1 Data Anonymization

  • Google Analytics data is anonymized
  • IP addresses are masked
  • Used solely to improve content and user experience

5.2 Opt-Out Options

  • Google Analytics Opt-out Browser Add-on: Download here
  • Browser Do Not Track settings: See Section 9

Learn more: Google Analytics Privacy Policy

6. How I Protect Your Information

6.1 Security Measures

  • HTTPS Encryption: All connections to this website are encrypted
  • Secure Hosting: Website hosted on reliable, secure infrastructure
  • Regular Updates: Software and security patches applied regularly
  • Limited Access: Only I have access to any collected information
  • Minimal Data Collection: I only collect what’s necessary

6.2 What I Don’t Do

  • ❌ No Selling: I will NEVER sell, rent, or trade your personal information
  • ❌ No Spam: I don’t send unsolicited emails
  • ❌ No Sharing: I don’t share your information with marketers
  • ❌ No Unnecessary Collection: I only collect essential information

7. Information Sharing

I do NOT share your personal information with third parties, except:

7.1 Service Providers

  • Google Analytics: For website analytics (governed by Google’s privacy policy)
  • Google AdSense: For advertising (governed by Google’s privacy policy)
  • Hosting Provider: For website infrastructure and security

7.2 Legal Requirements

I may disclose information if required to:

  • Comply with legal obligations or court orders
  • Protect my legal rights or property
  • Prevent fraud or security threats
  • Protect the safety of users or the public

7.3 With Your Consent

If you explicitly agree to share information for a specific purpose

8. Your Rights and Choices

You have the right to:

8.1 Access

  • Request what information I have about you
  • Receive a copy of your personal data

8.2 Correction

  • Request correction of any inaccurate information
  • Update your contact details

8.3 Deletion

  • Request deletion of your information (“right to be forgotten”)
  • I will comply within 30 days unless legally required to retain data

8.4 Opt-Out

  • Disable cookies through browser settings
  • Opt out of personalized advertising
  • Opt out of Google Analytics tracking

8.5 Data Portability

  • Request your data in a portable format (where applicable)

8.6 Withdraw Consent

  • Withdraw consent for data processing at any time

8.7 How to Exercise Your Rights

Email me at: [email protected]

Response Time:

  • General inquiries: 2-3 business days
  • Formal data subject requests: Within 30 days (as required by GDPR)

9. Do Not Track Signals

9.1 Current Status

This website does not currently respond to “Do Not Track” (DNT) browser signals, as there is no universal standard for DNT implementation.

9.2 Your Privacy Options

However, you can still protect your privacy by:

10. Children’s Privacy

10.1 Age Restrictions

This website is not intended for children:

  • Under 13 years old (United States – COPPA requirement)
  • Under 16 years old (European Union – GDPR requirement)

10.2 No Knowingly Collected Data

I do not knowingly collect personal information from children.

10.3 Parental Notice

If you are a parent or guardian and believe I have inadvertently collected information from a child, please contact me immediately at [email protected], and I will promptly delete such information.

11. External Links

11.1 Third-Party Websites

This blog may contain links to other websites, resources, or references.

11.2 No Responsibility

I am not responsible for:

  • Content, privacy policies, or practices of external sites
  • Products or services offered by third parties
  • Accuracy or availability of external information
  • Security of third-party websites

11.3 Your Responsibility

When you visit external links:

  • Review their privacy policies
  • Understand their data practices
  • Use at your own discretion

12. International Visitors

12.1 Website Operation

This website is operated from China and hosted on [Cloudflare/AWS/Your Hosting Provider].

12.2 Data Transfers

If you’re visiting from another country, please be aware that:

  • Your information may be transferred to and processed in different jurisdictions
  • Data may be stored on servers located in the United States (Google’s servers)
  • I ensure appropriate safeguards for international data transfers
  • Your data is protected according to this Privacy Policy regardless of location

12.3 Legal Compliance

I comply with applicable data protection laws, including:

  • GDPR (European Union)
  • CCPA (California, USA)
  • Other relevant privacy regulations

13. Data Retention

13.1 How Long I Keep Your Information

Email Correspondence:

  • Retained for 2 years from last contact
  • Or until you request deletion
  • Deleted permanently upon request

Analytics Data:

  • Retained according to Google Analytics settings
  • Typically 26 months (Google’s default)
  • Automatically deleted after retention period

Log Data:

  • Retained for 90 days for security purposes
  • Used to detect and prevent abuse
  • Automatically purged after 90 days

Cookie Data:

  • Session cookies: Deleted when you close your browser
  • Persistent cookies: Expire after 1-2 years
  • Analytics cookies: Up to 26 months

13.2 Deletion Requests

You can request deletion of your data at any time by contacting me. I will comply within 30 days unless legally required to retain certain information.

14. GDPR Compliance (EU Visitors)

If you’re in the European Economic Area (EEA), you have additional rights under GDPR:

14.1 Your GDPR Rights

  • ✓ Right to access your personal data
  • ✓ Right to rectification of inaccurate data
  • ✓ Right to erasure (“right to be forgotten”)
  • ✓ Right to restrict processing
  • ✓ Right to data portability
  • ✓ Right to object to processing
  • ✓ Right to withdraw consent at any time
  • ✓ Right to lodge a complaint with your supervisory authority

14.2 Legal Basis for Processing

I process your data based on:

  • Consent: When you contact me or accept cookies
  • Legitimate interests: Website analytics and improvement
  • Legal obligations: Compliance with applicable laws

14.3 Data Protection Officer

As a small personal blog, I do not have a dedicated Data Protection Officer. For GDPR-related inquiries, contact me directly at [email protected].

14.4 Supervisory Authority

You have the right to lodge a complaint with your local data protection authority if you believe your rights have been violated.

15. California Privacy Rights (CCPA)

If you’re a California resident, you have specific rights under CCPA:

15.1 Your CCPA Rights

  • ✓ Right to know what personal information is collected
  • ✓ Right to know how personal information is used and shared
  • ✓ Right to delete personal information
  • ✓ Right to opt-out of sale of personal information
  • ✓ Right to non-discrimination for exercising your rights

15.2 Important Notice

I do NOT sell personal information. This website does not sell, rent, or trade your personal data to third parties.

15.3 Categories of Information Collected

  • Identifiers (email, IP address)
  • Internet activity (browsing behavior, pages visited)
  • Geolocation data (country/city level)

15.4 Business Purpose

Information is used for:

  • Website operation and improvement
  • Analytics and performance monitoring
  • Responding to inquiries

15.5 Exercising Your Rights

California residents can exercise their rights by emailing: [email protected]

16. Data Breach Notification

16.1 In the Event of a Data Breach

In the unlikely event of a data breach affecting your personal information:

I will:

  • Notify affected users within 72 hours (GDPR requirement)
  • Notify relevant supervisory authorities if required by law
  • Take immediate action to secure the website and prevent further breaches
  • Provide information about:
    • What data was affected
    • What happened
    • Steps I’m taking to address the breach
    • Steps you can take to protect yourself

16.2 Security Measures

To prevent data breaches, I implement:

  • HTTPS encryption for all connections
  • Regular security updates and monitoring
  • Limited data collection to minimize risk
  • Secure hosting infrastructure
  • Access controls (only I have access to data)

16.3 Reporting Security Issues

If you discover a security vulnerability, please report it immediately to: [email protected]

17. Changes to This Privacy Policy

17.1 Right to Modify

I may update this Privacy Policy from time to time to reflect:

  • Changes in legal requirements
  • New features or services
  • Improvements in privacy practices
  • User feedback

17.2 Notification of Changes

When I make changes:

  • The “Last Updated” date at the top will be revised
  • Significant changes will be highlighted at the top of this page
  • Major changes may be announced via website notice

17.3 Your Responsibility

I encourage you to review this policy periodically. Continued use of the website after changes constitutes acceptance of the updated policy.

18. Contact Me About Privacy

If you have questions, concerns, or requests regarding this Privacy Policy or how your information is handled:

18.1 Contact Information

Email: [email protected]

Subject Line Suggestions:

  • “Privacy Policy Question”
  • “Data Access Request”
  • “Data Deletion Request”
  • “GDPR/CCPA Request”

18.2 Response Time

  • General privacy inquiries: 2-3 business days
  • Formal data subject requests (GDPR/CCPA): Within 30 days
  • Security issues: Immediate priority response

18.3 What to Include

When contacting me about privacy matters, please include:

  • Your name and email address
  • Specific nature of your request
  • Any relevant details to help me locate your information

19. Consent

By using this website, you consent to this Privacy Policy and agree to its terms.

19.1 How You Provide Consent

  • Browsing the website: Implies consent to essential cookies and analytics
  • Contacting me: Provides explicit consent to process your email and message
  • Cookie banner: Allows you to manage consent for non-essential cookies

19.2 Withdrawing Consent

You can withdraw consent at any time by:

  • Disabling cookies in your browser
  • Requesting deletion of your data
  • Stopping use of the website

20. Transparency Note

This is a personal blog run by one person (Tan) who is passionate about sharing power transformer knowledge.

20.1 My Commitment

I take your privacy seriously and will always be transparent about:

  • What information I collect
  • How I use it
  • Who I share it with (only Google services)
  • Your rights and choices

20.2 No Hidden Agenda

  • This is an educational blog, not a commercial enterprise
  • I use AdSense to help cover hosting costs
  • I don’t sell products or collect payment information
  • Your privacy is more important than ad revenue

20.3 Open Communication

If you ever have concerns or questions, please don’t hesitate to reach out. I’m here to help and will respond honestly and promptly.

Compliance Summary

This Privacy Policy complies with:

  • ✓ GDPR (General Data Protection Regulation – EU)
  • ✓ CCPA (California Consumer Privacy Act – USA)
  • ✓ COPPA (Children’s Online Privacy Protection Act – USA)
  • ✓ Google AdSense requirements
  • ✓ Google Analytics terms of service

Last Updated: January 19, 2026
Effective Date: December 26, 2025

© 2026 Transformer4U. All rights reserved.

Scroll to Top