Ton Giesberts (358)

€5 (FREE for Members)

| This circuit is primarily intended to be used by persons who want to experiment with audio. For example, you can determine whether your own...

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| This circuit can replace small mains adapters in the vicinity of the computer. This is particularly handy for devices that need a 12-V suppl...

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| There are many more types of single opamps available than dual or quad versions. Not only can it sometimes be interesting to replace a dual...

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| The fan controller circuit for the Titan 2000 and other AF heavy-duty power amplifiers, published in the May 1999 issue, has an output that...

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| The Pinnacle Studio MP10 is an external real-time MPEG1 codec that includes composite video input and output. The output provides only 0.7 V...

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| This little circuit is intended to be used to provide external access to an unused digital output of a CD or DVD drive in a PC. It provides...

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| This is a sort of sequel to the article ‘2 × single = 1 × dual’. In this case, two dual opamps are combined to make one new quad opamp. This...

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| This power supply has been specially designed for the 20th-order filter described elsewhere in this issue, but it can also be used for a leg...

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| This circuit is based on the configuration of a fifth-order Butterworth filter using only one opamp (see p 116 of the 1995 Summer Circuits i...

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| This circuit is an alternative to the optical S/PDIF output described elsewhere in this issue. The quality of the connection provided by thi...