MFOS Swiss OpAmp Knife
The Swiss OpAmp Knife is for when you have an idea that requires some op amps and associated components and you want a quick PC board to accomodate the circuitry.
The Swiss OpAmp Knife accomodates a TL074CN quad op amp or any op amp whose pinout matches the TL074CN. It makes creating op amp based circuits quick and easy. Each of the four op amps has the same compliment of pads. The quad op amp package is bypassed with both .1uF caps right at the power pins and 10uF electrolytics where the power comes into the board. There are four input pad areas which can be routed to either the inverting or the non-inverting input via jumper. There are several floating pads. There are pads for the inverting and non-inverting inputs that align with the output of the op amp. This makes adding positive or negative feedback elements very convenient. There are pads that connect to ground, POS and NEG in case your circuit needs them. There are pads to accomodate biasing resistors. You can apply bias from any or all of the pads. Since you can use a two resistor voltage divider between POS and NEG to get any voltage in between the RG (resistor to ground) pads can be used for a voltage stabilization cap. In other circumstances you may prefer to bias using just RP and RG or just RN and RG. The inverting inputs are marked with the "-" symbols and the non-inverting inputs are marked with the "+" symbols.