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Projecttitel: VDD 3505-01 Five buffered Voltages

Status: 
Status
colourGreen
titleready

Startdate: 05.Jan.2018

Duedate: --

Manufacture link: https://www.diysynth.de/pcbs-panels/vdd-3505-01-pcb-only.html

 

Specs:

The module provides five independent buffered control voltages from -5V to 5V. The outputs are buffered to reduce voltage influences induced by load changes at the individual outputs.

Typical use cases of an voltage module are

  • offset voltages for other modules like VCAs or VCFs
  • Wide range tuning of VCOs

As part of the "01" sub-series the PCB is compatible to Eurorack as well as MOTM. (-12/12V & -15V/15V) Supported Power Header formats are 10/16 pin Euro and MTA 156. The module is protected by rectifiers and provides power capacitors.

You won't find the usual filter resistors or beads, because there won't be voltages spikes induced by this module. The linear regulator and the caps are just fine. Since there is nearly no power soak at the reference voltage, the OpAmps will prevent voltage interference from the distribution board. 

 

BOM:

Five Voltages.csv

IDID-PCBCasetypeAmountDesignatorSource
1D1,D2D_DO-41_SOD81_P10.16mm_Horizontal21N4001 https://www.diysynth.de/product_info.php?info=p44_1n4001-diode.html
2IC Socket 8pinIC SocketsSocket 8pin DIP/DIL3--https://www.diysynth.de/product_info.php?info=p10_8-pin-dip-ic-sockel-rund.html
3C1,C2CP_Radial_D5.0mm_P2.00mm210µFdiysynth.de
4C3,C4CP_Radial_D5.0mm_P2.00mm21µFdiysynth.de
5C5,C6,C7,C8,C9,C10,C11,C12C_Disc_D5.0mm_W2.5mm_P2.50mm8100nFdiysynth.de
6J1MTA-100-3p1CV1 100KBor use wirelink directly
7J2MTA-100-3p1CV2 100KBor use wirelink directly
8J3MTA-100-3p1CV3 100KBor use wirelink directly
9J4MTA-100-3p1CV4 100KBor use wirelink directly
10J5MTA-100-3p1CV5 100 KBor use wirelink directly
11J11MTA-100-2p1CV4optional for MOTM
12J12MTA-100-2p1CV5optional for MOTM
13J13MTA-100-2p1CV1optional for MOTM
14J14MTA-100-2p1CV2optional for MOTM
15J15MTA-100-2p1CV3optional for MOTM
16P2Pin_Header_Straight_2x08_Pitch2.54mm1EURO - optionalonly EURORACK
17R1,R2,R3,R4,R5,R11,R12,R13,R14,R15,R16,R17Resistor 1% THT121K 
18R6,R7,R8,R9,R10Resistor 1% THT5100K 
19U1,U3,U5TL082 OPAMP DIP83TL082 
20U25V Voltage regulator TO-92_Inline_Wide17805 LM78L05https://www.mouser.de/productdetail/on-semiconductor-fairchild/lm78l05acz?qs=sGAEpiMZZMtdAabcSkQOl9gipZmsKLz7
21P1MTA1561MOTM -optionalonly for MOTM
22J6Cliff13841Out-CV1disynth.dehttps://www.diysynth.de/product_info.php?info=p40_cliff-socket-3-5mm-mono-with-nut.html
23J7Cliff13841Out-CV2disynth.dehttps://www.diysynth.de/product_info.php?info=p40_cliff-socket-3-5mm-mono-with-nut.html
24J8Cliff13841Out-CV3disynth.dehttps://www.diysynth.de/product_info.php?info=p40_cliff-socket-3-5mm-mono-with-nut.html
25J9Cliff13841Out-CV4disynth.dehttps://www.diysynth.de/product_info.php?info=p40_cliff-socket-3-5mm-mono-with-nut.html
26J10Cliff13841Out-CV-5disynth.dehttps://www.diysynth.de/product_info.php?info=p40_cliff-socket-3-5mm-mono-with-nut.html
27 16mm alpha 100KB (LINEAR) potentiometer5 banzai, musikding, mouser, thonk

 

Schematics:

 

Five Voltages.pdf