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    Aion PCB's

    Are those green poly caps significantly cheaper / better than the KEMET or WIMA film caps? They take up a lot more real estate which might be a problem with some boards.
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    Aion PCB's

    That module is very close but - as you say - it needs to integrate a round pcb-mounted DC jack so it works with the hundreds of predrilled enclosures that Tayda makes for PedalPCB boards. It wont be easy as the Tayda predrilled enclosures have the power jack on different level to the I/O, but if...
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    Aion PCB's

    I built 2 Aion kits before turning to PedalPCB builds. Aion's strategy is to simplify the offboard wiring as that seems to be the biggest challenge builders face. I think their breakout board and interconnect solution is good but it only works if you have enclosures with a square cutout for the...
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    Muffin Fuzz (Rams Head)

    I'm having trouble evaluating this circuit on the breadboard as it seems very prone to noise. Way worse than other circuits I've tried. I'm using the protoboard. Any advice on how I can quiet this down a bit?
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    Muffin Fuzz (Rams Head)

    Yes, I think the reason it took me so long to figure it out is that the circuit actually works up to a point. I was getting decent fuzz like tones off of Q3 but it all went away on the tone stack and Q4. I didn't know that transistors work even if slotted the wrong way around.
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    Muffin Fuzz (Rams Head)

    Solved. You will find this amusing... As I hadn't worked with transistors since college 40 years ago, when I built this I looked at the datasheet to determine which leads were C, B, and E, using image below: ...and I misread it. Lead 3 is the collector, and I read the bottom view as top down...
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    How to Test NPN Transistor Beta with Breadboard and Multimeter

    I'm having some transistor bias issues with my breadboarded Muffin here. As the collector voltages are way too high on all 4 transistors I'm wondering if I got a 'special' batch of 2N5088s from mouser. Is there a simple circuit that I can build on a breadboard that would allow me to measure...
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    Muffin Fuzz (Rams Head)

    Output is weak and far less gainy than my EHX Muff. Output of Q3 sounds much better. I think Q4 runs out of headroom. I swapped out and tested the 12k resistors. All are 12k. To check LTSpice, I also modelled the BMP circuit shown in electrosmash as that has voltage check points on it -...
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    Muffin Fuzz (Rams Head)

    I found a problem. I had a set of 180k resistors in my bag labelled 100k. So all 4 100k bias resistors were in fact 180k. I was wondering who changed the laws of physics, but this is a better explanation. HOWEVER: this brought all 4 base voltages down to ~0.6V which is what LTSpice says they...
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    Muffin Fuzz (Rams Head)

    All the caps I used in this build (except the power supply) were not electrolytic - I have film caps in the values that the schematic identified as electrolytic. Does this matter? In the model above, that would be C3, C8, C5, C7, C12, C10, and C11. I'm still wondering why my collector volts are...
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    Muffin Fuzz (Rams Head)

    I'm breadboarding the Violet Rams Head version of the Muffin Fuzz. Output seems low. Looking at LTspice, I see the collector voltages are supposed to be 4V and change, but 6.6V at Q4. All of mine measure as 7V and change. I checked all the resistors, they are correct values. Base voltages are...
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    Filter Design for Specific Tones

    The Duncan tonestack app is a good way to experiment with the BMP tonestack. I'm having a problem with my breadboarded BMP at the moment as if I take the output off the collector of Q3 it sounds great, but if i take it off the cap after Q4 it sounds thinner. There must be something wrong with my...
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    Filter Design for Specific Tones

    One design that works well with a 3PDT switch is the Radian Ge Treble Booster by AionFX. With the switch open you get the 4n7 and with it closed you get the 4n7 in parallel with either the 6n8 or the 22n for treble, mid, or full range boost. In other news I've just breadboarded a Muffin Fuzz...
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    1/4th vs 1/8th W resistors

    I guess you also have come across that toy rabbit that sings that f##king song over and over :ROFLMAO:
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    1/4th vs 1/8th W resistors

    I was warned off ordering resistors from Tayda - don't theirs have those floppy thin leads?
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    1/4th vs 1/8th W resistors

    I've been buying from mouser in lots of 10 (or 20 for the popular ones) but I'm annoyed at their website - they have many different models of same resistor value even of same brand, so it takes some effort to select every one. And then I find that a load of my latest batch seem to be half the...
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    Eternal Burst (Lovepedal Eternity Burst)

    I finished the enclosure and boxed it up. Sounds great. Not happy with the finish though - I've tried this 'clearcoat over waterslide decal' approach on both my pedalpcb builds and been far from happy with the clearcoat - this time it did a spectacular orange peel effect on me and looks like...
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    Eternal Burst (Lovepedal Eternity Burst)

    I settled on A100k for volume, B10K for Tone, and A500k for Drive due to stocks of pots trading off against which pot values matter. I also found that I had no 150n cap so went with a 220n instead - which is what the original TS used so its acceptable I guess. The offboard wiring was greatly...
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    Eternal Burst (Lovepedal Eternity Burst)

    Posting the PedalPCB schematic as a reference:
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    Eternal Burst (Lovepedal Eternity Burst)

    I thought so too, but when I tried A250k the amount of gain / clipping in the middle of the sweep wasn't as satisfying as with a B250k. I'm anal about having the pedal sound 'great' with all at 12, and falling out the usable range after 3 and before 9. Getting there!
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