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Forum Index : Microcontroller and PC projects : are this the correct parts voor the audio filter picomite
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| tenij000 Regular Member  Joined: 30/05/2025 Location: NetherlandsPosts: 72 |
are this the correct parts voor the audio filter picomite  |
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phil99 Guru  Joined: 11/02/2018 Location: AustraliaPosts: 3016 |
The colour code of the 220Ω resistors doesn't look right. I think you should measure them before installing, they might be 420Ω 3 band + tolerance type:- For 220Ω 1% I would have expected red, red, brown for the resistance, a space then brown for 1% 4 band + tolerance type:- For 220Ω 1% red, red, black, black for the resistance, a space then brown for 1% Edit. The resistors in the strip look different to the enlarged one. Perhaps they are 220Ω Edited 2026-02-18 17:21 by phil99 |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8568 |
That inductor is a power type. Try to find a smaller axial type. There's no current involved in this application. Mount the two inductors at right-angles to each other or space them apart. You don't want inductive coupling between them. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 5703 |
For left and right audio, you would not need that many. 2 x 220 ohm 2 x 68nf 2 x 33nf 2 x 2.7nf 2 x inductor 4.7mH people have successfully used this part 4.7mH Volhout Edited 2026-02-18 19:54 by Volhout PicomiteVGA PETSCII ROBOTS |
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