Blogs
I was Wrong about Parallel Decoupling Capacitors!
…and what I’ve learned could help in EMI reduction! Executive Summary Having multiple values of capacitors in parallel can inadvertently introduce resonances into a decoupling circuit. These can be mitigated by using a very small resistance in series with each capacitor. Even better, using multiples of the exact same capacitor can be far more effective …
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Do Not Trust Caller ID!
Most of our phones will helpfully display the telephone number or even the name, for incoming calls. This is a great help. You can often avoid telephone solicitors, for instance sending “Annoying Surveys Inc.” to voicemail. You can prepare your greeting, greeting an office colleague more formally than an old college friend. Unfortunately, you cannot …
So Your Office wants to Use VoIP, eh?
The Telephones, They are a Changin’ Back in the 70s and earlier, offices were served by a system with the telephone company providing all the connections, and forcing the use of their equipment. In the office where I worked, it meant 4 separate lines, and every phone had four lighted buttons. If a button was …