Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
There are numerous published versions of 555 VCO circuits, but many suffer from a limited frequency range, don't start from zero frequency, or have other deficiencies.
This circuit described here uses a voltage-controlled, constant-current to the timing capacitor, which gives a control range...
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