Java Circuit Simulation Workaround ▾

Due to recent changes by Oracle, java applets have become difficult to run in the browser. To mitigate the troubles, Oracle has provided the following websites to help users troubleshoot: and

Even after following the above instructions, loading applets may still show warning concerning “unsigned application” and “unknown publisher”. For Teahlab in particular, these warnings are due to the fact that we have opted not to pay a third party such as Verisign to sign our applets. Any warning that comes up when you try to run our applets should emphasize that our applets will always run with “limited access”, which is Oracle’s way of letting you know that teahlab doesn’t do anything on your computer except running the circuits you see: in other words, our applets are safe to run.


The Teahlab Team


TeahLab Privacy Policy

At Teahlab, we recognize that our visitors’ privacy is important. To better protect our visitors’ privacy, we provide this notice explaining our online information practices and the choices they can make about the way their information is collected and used.

If our visitors have forum accounts, we collect their email and IP address, just as all forums do, so to distinguish a visitor’s account from that of other users. Otherwise, we only collect anonymous information to understand how our visitors engage with our website.

We collect information to identify trends on our site, without identifying individual visitors. We collect anonymous geographical information on our visitors so as to better serve them. Such information include time zone, for example, so as to schedule maintenance on our site at a time that is least inconvenient for our visitors. In addition, we collect the following anonymous information for trending purposes: what site referred our visitors to us; what is the time of visit; is this a returning visitor.

This privacy policy sets out to inform our visitors of how TEAHLAB uses and protects any information that our visitors give TEAHALAB when they use this website. TEAHLAB is committed to ensuring that our visitors’ privacy is protected. Should we ask a visitor to provide certain information by which they can be identified when using this website, our visitor can be assured that the information will only be used in accordance with this privacy statement. TEAHLAB may change this policy from time to time by updating this page. Our visitors should check this page from time to time to ensure that they are happy with any changes.

Log Files

As with most other websites, we collect and use the data contained in log files. This helps us analyze data about web page traffic and improve our website in order to tailor it to visitors needs. The information in the log files include our visitors’ IP (internet protocol) address, their ISP (internet service provider), the browser they used to visit our site, the time they visited our site and which pages they visited throughout our site. We only use this information for statistical analysis purposes.

Cookies and Web Beacons

A cookie is a small file which asks permission to be placed on an individual’s computer’s hard drive. Once the individual agrees, the file is added and the cookie helps analyze web traffic or lets the individual know when they visit a particular site. Cookies allow web applications to respond to a person’s preference. The web application can tailor its operations to people’s needs, likes and dislikes by gathering and remembering information about their preferences.

We DO NOT use cookies to personally identify our visitors. We use cookies to help us provide our visitors with a better website, by enabling us to monitor which pages our visitors find useful and which they do not. A cookie in no way gives us access to our visitors computers or any personally identifiable information about them, other than the data they choose to share with us.

For visitors with forum accounts, those visitors have the choice of using cookies to remember their forum user id and password. Most forums provide this option to visitors.

We also use third party advertisements on Teahlab to serve ads. Some of these advertisers may use technology such as cookies and web beacons when they advertise on our site, which will also send these advertisers information including visitors IP address, their ISP , the browser they used to visit our site, and in some cases, whether they have Flash installed. This is generally used for geo-targeting purposes (showing New York real estate ads to someone in New York, for example). For more information about this practice and choices about not having this information used by these companies, click here.

Our visitors can choose to disable or selectively turn off cookies in their browser settings. However, a person’s browser setting may affect their ability to interact with our site as well as other websites. This may include the inability to login to forums or other user accounts.

Our third party sponsors and advertisers have their own privacy policies. To learn about their policies, visit the respective site.

Contacting us

Should there have other questions or concerns about these privacy policies, please send us an email at