A neat circuit simulation I worked on a while back that was intended to provide automatic RF gain control.

In other words regardless of how strong or weak the input signal is the circuit would either attenuate or amplify the signal to bring it to ~ 3V. The idea was to be able to use it to analyze signals with a wide range of input voltages on a 3.3V chip. It was going to be part of a frequency counter but I created a simpler design for that in the end.

Either way check it out and play with it even if the circuit doesnt interest you as this web-based circuit simulator is pretty cool if your a beginner or just want to mess around with a circuit idea.

http://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCBsCmC0YQMxgHQBYwE4AMlLYCYAOAVkkzQJBIHZrrsAoANxHhshCOzYSu5A8IBbKLE9sKAiUGzJJRgHNeHLj3adMnJgCdwxEGiLhMVI7LBjGexNjRrD5gUJJWA7o+MC05sAaYetvbmQQ4BIKECoXyCjACGEXb6xj7Gfl7gMvAyluLqkuKIiD4kJNI+RYgEmHRCeUqJ9mA+jeD4sXoEaDwhSeZ1jB5YZsZdPcbhw4ZppmGMAGYg0pwiM1Sr4OAoMpIE1ktkS9ijh8QT4HmTswRdJutEE4MHKw93S69XVFNTzk9nRycVsdYsoaCJkiAwUIWrooN04ZDwZB7HVRIwACbUWbIuE8HGIEDo6DzOIAVwANgAXRgAY0RePsUIhPRQNDglkEKEgNzARGauAIiAoRj2em4DLUQn8FzRHhoZQRTJx4XFCKIOOVT3V9i0XBxzRRWt8LW14BhjAASlxjfYiL4-HJDBJto75PE9baeFoeAI0lkwDlLpzuQRefzuULUlR5DL3O9RsDkTwNnsPERdRtvQDYh4s5n2r85QqcarNcpVelJWbDWKM8COAnzrkmHSG9m2wQwRY4MZ4Kg+dhXBU8NVMLynh3E-CNkxQZBRl2Ox93WhdTiSNjbZleIG8hEUMU0CQsNhMGPKLZOIgDyUyiQKkVqjQCc3ZViqOvZhInhvo4Zdd+Hirto-6cP0TypA4wFzMoUz-FMoRMAA8p4ELHl80pMAAymwVTgA6sACDEEggCS5IAM7QLIqZsAIup9vw37KBo1YqJwYDtEwrAsQavAOrxQhHEGOxyNsTwMaxhFSo8QwGOYurgR4EkcbRJFcWxbR8V8IEQK4e4ic6CjMWAqgqSxeHhFJuFUBJsDgThsB4fAnBWc5jpkZR1ENCxdm9iZLkWSwGm+VpbD9JseniJy0iumJOEKcYeHhTwHlUcm4lOSpeGBYEH72I5XwOkwAD2DAIj0p7GDsKDYH4IlUK4ESMKVLTKk6mAJpyEDdYwQA

#Electronics #EE #RF #Science