Name="K" type="passive"/> Operational amplifier, DIP-82 pin Molex connector 2.54 mm spacing Pin header 2.54 mm spacing | Tayda | A-1847 | | | R21, R22, R23 | 3 | 1nF | Unpolarized capacitor | | | | R4, R6, R7 | 3 | 2N3904 | Small Signal NPN Transistor, TO-92Switch, triple pole double throw, separate symbols K switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch, small symbol D 5x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol D 3x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol D 8x DIP Switch, Single Pole Single Throw (SPST) switch with Signal Lamp, generic K switch spdt single-pole double-throw ON-OFF-ON D Single Pole Single Throw (SPST) switch, small symbol D 6x DIP Switch, Single Pole Single Throw (SPST) switch, separate symbol D 2x DIP Switch, Single Pole Single Throw (DPST) Switch, temperature dependent K.