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Recent content by radagast

  1. R

    Part identification from tech21 NYC XXL distortion pedal

    Hello again. I have a broken pedal, and I can't seem to get what this part is. On the front it looks like a rectangular box, and on the back it has many small boxes on the IC. At first I thought this was some digital stuff, but I saw on the internet a schematic with discrete underneath. I can't...
  2. R

    [SOLVED] [MOVED] Looking for a circuit breaker (switch) for a guitar pedal

    Thank you!
  3. R

    [SOLVED] [MOVED] Looking for a circuit breaker (switch) for a guitar pedal

    Hello. I'm trying to fix a guitar effect called RAT. It's a pretty old device (the circuit says 1986). The main off-on switch just doesn't work. I'm wondering how I can tell which I need to buy, I guess it's pretty generic but I don't know of any website with respective pictures. This is what...
  4. R

    Power amplifier for DC motor?

    Thanks But I don't want a switching amplifier, I rather need a linear one. ie, the motor will get more voltage and spin faster for higher input volumes. So I can't use the X seconds up circuits... I know that a power amplifier is what I need, I'm just wondering how to design it. One thing I...
  5. R

    Power amplifier for DC motor?

    Hi. I want to build an amplifier that will have a microphone (low voltage, low current) as an input, and a dc motor at the output (it is about 60 ohm). Seeing as I'd need at the output both high voltage and high current I need an power amplifier, right? I saw that a possible design is an...
  6. R

    [SOLVED] looking for a discrete transistor (bjt)

    I see... thanks.
  7. R

    [SOLVED] looking for a discrete transistor (bjt)

    Hi I'm looking for a transistor with the following properties: vbe,on=0.7v, vce,sat=0.2, beta=100. Needn't be accurate, I just don't know how to find a transistor by these properties. I need a model name I can buy at the store... Thanks.
  8. R

    how to probe cgs cgg in Pspice

    Hi. I know this is pretty simple in HSpice, but how do I probe the cgs of an NMos etc. in PSpice? .probe only gets V(), I() but no internal parameters... Thanks.
  9. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    Okay, after fiddling a bit I found this solution: Using SUBCKT on pspice gets me the above result; as well as just turning into a dip package instead of looking like a transistor it also doesn't take the parameters well. So I just created the NMos model by the conversion program, and as for...
  10. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    The problem when I do something like this is that I get a subcircuit with these parameters as pins:
  11. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    If I understand correctly what you mean,
  12. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    I actually do set the level, it's just later on. But even when I move the level declaration to the top I get the same error...
  13. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    Hi This is the beginning of the model (other data is just other parameters): These are the errors: Thanks.
  14. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    I read this document. However it says that if I set params such as AD explicitly it should be fine. However my PSpice doesn't recognize them on my model...
  15. R

    [SOLVED] [MOVED]Converting MOS HSpice level 49 to PSpice

    Hi I need to convert NMOS/PMON from HSpice (level 49) to PSpice. I did see the PDFs around but I still get errors. I run on PSpice 16.5 if it matters. It doesn't recognize the following parameters: m, ad, as, pd, ps, nrd, nrs, nrg, nrb. Also, anyone knows how to use the internal parameters...
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