# Schematic heavy questioning (Simple PT2399 delay and Triple Splashback)

**URL:** <https://lookmumnocomputer.discourse.group/t/schematic-heavy-questioning-simple-pt2399-delay-and-triple-splashback/2888>\
**Category:** DIY STUFF\
**Created:** [February 6, 2021, 12:11am UTC](https://lookmumnocomputer.discourse.group/t/schematic-heavy-questioning-simple-pt2399-delay-and-triple-splashback/2888 "2021-02-06T00:11:04Z")\
**Posts on this page:** 1\
**Showing post:** 79

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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [February 7, 2021, 11:13pm UTC](https://lookmumnocomputer.discourse.group/t/schematic-heavy-questioning-simple-pt2399-delay-and-triple-splashback/2888/79 "2021-02-07T23:13:22Z")

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Exact regulator is here:

> **[L7805CV | DigiKey Electronics](https://www.digikey.com/en/products/detail/stmicroelectronics/L7805CV/585964)**
>
> Order today, ships today. L7805CV – Linear Voltage Regulator IC Positive Fixed 1 Output 1.5A TO-220 from STMicroelectronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

You can look at TI’s datasheet for differences between TL074 and TL074C, they’re pretty minor. Either should work. The other two components are fine too.

Also, here’s a Tayda BOM:

> [@2399 triple splashback delay](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/10):
>
> Hey @lookmumnocomputer, looks like these components are pretty easy to source! Can you confirm if this is the right IC: PT2399 2399 ECHO AUDIO PROCESSOR GUITAR IC [https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html](https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html)Tentative BOM Tayda Cart: Looks like you can get all parts @ Tayda. 2N3904 NPN GENERAL PURPOSE TRANSISTOR [https://www.taydaelectronics.com/2n3904-npn-general-propose-transistor.html](https://www.taydaelectronics.com/2n3904-npn-general-propose-transistor.html) [image] Quantity: 7 10 PIN BOX HEADER CONNECTOR 2.54MM 2\*5PIN [htt…](https://www.taydaelectronics.com/10-pin-box-header-connector-2-54mm.html)

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