Dbtech SIGMA S215 · powered speaker
90 components · 26 parts identified · 1 photo. Tap a marked part to see what it is.
67 traced nets on this board are available to technicians. See plans
33078 isn't marked on this board.
| Designator | Part (number or value) | Description | Package |
|---|---|---|---|
| D16 | - | bootstrap diode | |
| Q4, Q5 | BC846B | current sense transistor | |
| Q6 | BC846B | power supply shutdown transistor | sot23 |
| R67 | 6.8 ohm 0805 | tweeter amp high side gate series resistor 6.8 ohm | |
| R73 | 6.8 ohm 0805 | tweeter amp low side gate series resistor 6.8 ohm | 0805 |
| U12 | 8M15BG | vcc regulator | to252 |
| U15 | 78M08G | positive opamp regulator | |
| U16 | 79M08G | negative opamp regulator | |
| VR3 | - | ntc | |
| - | speaker out | ||
| - | header | ||
| - | ac detect optocoupler | ||
| - | csd test point | ||
| - | xlr thru out | ||
| - | xlr input | ||
| - | 1/4 inch input | ||
| - | negative power cap | ||
| - | positive power cap | ||
| - | -secondary power cap | ||
| - | +secondary power cap | ||
| - | gnd | ||
| - | tweeter amp bootstrap diode | ||
| - | woofer amp bootstrap diode | ||
| - | tweeter amp csh diode | ||
| - | vdrive rectifier | ||
| - | positive opamp rectifier | ||
| - | negative opamp rectifier | ||
| - | woofer amp csh diode | ||
| - | ac detect rectifier | ||
| - | aux rectifier | ||
| - | current sense resistor | ||
| - | tentative resonant capacitor | ||
| - | tentative ac bridge rectifier | ||
| - | ac detect current limiting resistor | ||
| - | tentative vcc winding | ||
| - | tentative negative winding | ||
| - | tentative positive winding | ||
| - | main secondary windings | ||
| - | primary and aux windings | ||
| 10 ohm 0805 | tweeter amp vcc current limiting resistor 10 ohm | 0805 | |
| 10 ohm 0805 | woofer amp vcc current limiting resistor 10 ohm | ||
| 10k ohm 0805 | tweeter amp vb resistor 10k | ||
| 10uf 25v 1206 | woofer amp vcc capacitor | ||
| 10uf 25v 1206 | woofer amp vb capacitor | ||
| 10uf 25v 1206 | vcc capacitor | ||
| 10uf 25v 1206 | vb capacitor | ||
| 2.2k ohm 0805 | tweeter amp csh resistor 2.2k | ||
| 22 ohm 1206 | |||
| 22k ohm 2010 | ac detect current limiting resistor | ||
| 24LC256 | eeprom | soic8 | |
| 4.7 ohm 0805 | tweeter amp vboot series resistor 4.7 ohm | 0805 | |
| 4.7 ohm 0805 | woofer amp vboot series resistor 4.7 ohm | ||
| 4.7 ohm 0805 | woofer amp high side gate series resistor 4.7 ohm | ||
| 4.7 ohm 0805 | woofer amp low side gate series resistor 4.7 ohm | 0805 | |
| 5.6k ohm 0805 | 5.6k | ||
| ADAU1701 | dsp | lqfp48 | |
| GENERIC CERAMIC CAPACITOR | csd capacitor | ||
| GENERIC CERAMIC CAPACITOR | woofer amp csd capacitor | ||
| IRFB4227 | tweeter amp low side mosfet | ||
| IRFB4227 | tweeter amp high side mosfet | ||
| IRFB4227 | woofer amp mosfet | ||
| IRS20957S | tweeter amp audio driver | ||
| IRS20957S | woofer amp audio driver | ||
| IRS21531D | soic8 | ||
| LM317 | digital power regulator | dpak | |
| LMC555 | over current protection timer | ||
| MC33078 | soic8 | ||
| MC33078 | tweeter amp pwm modulator | soic8 | |
| MC33078 | woofer amp pwm modulator | soic8 | |
| PIC16F689 | mcu | ssop20 | |
| STP20NK50Z | main power high side mosfet | ||
| STP20NK50Z | main power low side mosfet | ||
| STTH802 | main secondary rectifier | ||
| U1J SMB | smb |
Marked, not identified yet: Q100, ZD2, ZD100