I want to build preamp for condenser microphone capsule. It is not electret, I disassembled one and it is condenser mic. When I google for "condenser mic preamp" 99% of schematics are for electret which is not what I want.
I'm looking for simple schematic I can build with parts I have. I don't have many parts but I have:
- various NPN/PNP (30 different types)
- jfets: 2SK30A, BF245A, 2SK246, 2N5457, J201
- bs170 (and few other mosfets in TO220)
- largest resistor I have is 10M (100pcs)
- opamps (TL071, OP27G, LT1028, NE5532, LM258, JRC4558, TL064IN)
- other (NE555P, ICM7556IPD)
- various diodes (30 different types)
- 1/4w E12 resistors (1R..10M)
- 9V battery
I assume I will need charge pump to make higher voltage so I have these caps:
- 100V polyester caps (1n..470n)
- 50V ceramic caps (5p..100n)
- most of my electrolytic caps ends at 16V, I have few 35V and few random oddbals in higher voltages
Is there a schematic I can built with these parts?
If not what should I buy to build something simple?