DMH-Tripple-VCA
DeMarco
3x transistor based VCA on same panel
Components (16)
| Reference | Value | Description |
|---|---|---|
| Q1-Q6 | BC548 | 0.1A Ic, 30V Vce, Small Signal NPN Transistor, TO-92 |
| U1,U2 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-14/SOIC-14 |
| C1,C2 | 47uF | Polarized capacitor |
| C3-C8 | 100nF | Unpolarized capacitor |
| D1 | SB140+ | 40V 1A Schottky Barrier Rectifier Diode, DO-41 |
| D2 | SB140- | 40V 1A Schottky Barrier Rectifier Diode, DO-41 |
| D3-D5 | LED_Dual_AKA | Dual LED, common cathode on pin 2 |
| J1-J10 | TS_Jack_6.35mm_Sw | Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling), 6.35mm, 1/4inch |
| J50,J60,J70 | Conn_01x06 | Generic connector, single row, 01x06, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J100,J200 | IDC_02x05 | IDC jack, 2x5 pins, row a carries same signals as row b. |
| R1,R2,R16,R17,R31,R32,R53-R55 | 20k | Resistor, US symbol |
| R3,R7-R9,R13-R15,R18,R22-R24,R28-R30,R33,R37-R39,R43-R51,RV1-RV6 | 100k | Potentiometer, US symbol,Resistor, US symbol,Trim-potentiometer, US symbol |
| R4,R6,R12,R19,R21,R27,R34,R36,R42 | 10k | Resistor, US symbol |
| R5,R20,R35,R52,R56-R61 | 1k | Resistor, US symbol |
| R10,R11,R25,R26,R40,R41 | 100R | Resistor, US symbol |
| SW1-SW3 | SW_DPDT | DPDT switch, can be ON-ON or ON-OFF-ON |