Search found 51 matches

by tonyharker
10 Mar 2024, 10:53
Forum: Pedal Debugging & Troubleshooting Support
Topic: 6N17B not working [SOLVED]
Replies: 13
Views: 8432

Re: 6N17B not working [SOLVED]

Can you see a glow from the heaters?
by tonyharker
13 Mar 2023, 19:58
Forum: Pedal Debugging & Troubleshooting Support
Topic: Biasing a rangemaster type circuit
Replies: 5
Views: 618

Re: Biasing a rangemaster type circuit

A true Rangemaster is not a distortion device but a treble booster. The output should not be distorted.
by tonyharker
09 Mar 2022, 19:39
Forum: DIY Projects
Topic: useful reverb tank info stuff
Replies: 7
Views: 1026

Re: useful reverb tank info stuff

Thanks mate :)
by tonyharker
23 Nov 2021, 14:07
Forum: Davidoff Library
Topic: Simple Pre-Amplifier and Treble Booster, in: Practical Electronics, March 1966 🇬🇧
Replies: 6
Views: 1431

Re: Simple Pre-Amplifier and Treble Booster, in: Practical Electronics, March 1966 🇬🇧

Not only have you got a treble booster you have got the MoJo of a Germanium treble booster :)
by tonyharker
01 Nov 2021, 16:07
Forum: Electric Guitar/Bass Wiring
Topic: Cowpoke preamp [schematic]
Replies: 6
Views: 19080

Re: Cowpoke preamp [schematic]

The circuit around the second op amp is just a Baxandal feedback tone control and is correct.
by tonyharker
29 Jul 2021, 22:19
Forum: Parts & Tools Sourcing & Trading
Topic: CA3080M - EBay Seller Chipsgate
Replies: 1
Views: 1347

Re: EBay Seller Chipsgate

All the pictures I've seen of the Intersil/Renesas device shows an indent in the package next to pin one.
by tonyharker
02 May 2021, 21:57
Forum: DIY Projects
Topic: 6J1 9V real tube drive [documentation]
Replies: 10
Views: 3652

Re: 6J1 9V real tube drive [documentation]

Any sound samples?
by tonyharker
07 Oct 2020, 15:00
Forum: Boutique Stompboxes dissected...
Topic: Orange - Terror Stamp [traced]
Replies: 18
Views: 6625

Re: Orange Terror Stamp [traced]

I'd like to know how you picked it up for for almost nuthin :)
by tonyharker
07 Oct 2020, 10:47
Forum: Boutique Stompboxes dissected...
Topic: Orange - Terror Stamp [traced]
Replies: 18
Views: 6625

Re: Orange Terror Stamp [traced]

What sort of heatsink is on that TDA7379 I wonder.
by tonyharker
16 Sep 2020, 10:43
Forum: Pedal Debugging & Troubleshooting Support
Topic: Benson Preamp help!! [SOLVED]
Replies: 23
Views: 4452

Re: Benson Preamp [SOLVED]

You could have fake J201s. They are not being made any more. You really need some test equipment if you are going to DIY and a multimeter is essential.
by tonyharker
09 Aug 2020, 09:46
Forum: Amplifiers
Topic: Amp switching
Replies: 6
Views: 1584

Re: Amp switching

Short answer is no. What do you want to switch and what do you mean by switching capability?
by tonyharker
08 Jul 2020, 18:13
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Hornby Skewes - Zonk Machine - middle transistor is silicon ??? trim pot
Replies: 34
Views: 22261

Re: Zonk Machine - middle transistor is silicon ??? trim pot

Looking at the construction of this pedal, I wonder how many other commercial pedals were made on perf/vero board.
by tonyharker
07 Jul 2020, 10:17
Forum: Davidoff Library
Topic: Fred Ippolito Jr, Vibrato Simulator, Electronics World November 1962
Replies: 1
Views: 1103

Re: Vibrato Simulator, Electronics World November 1962

FYI Other copies of Electronics World are available here, https://worldradiohistory.com/Electroni ... r_Page.htm if you didn't know already. :)
by tonyharker
03 Jul 2020, 14:31
Forum: Parts & Tools Sourcing & Trading
Topic: Supplies from AMAZON!
Replies: 1
Views: 1889

Re: Supplies from AMAZON!

Check the seller. A lot of Chinese sellers sell via Amazon.
by tonyharker
04 Apr 2020, 13:40
Forum: Boutique Stompboxes dissected...
Topic: Stage 3 booster
Replies: 6
Views: 1971

Re: Stage 3 booster

FET Booster with no input cap.
by tonyharker
18 Jun 2019, 08:33
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Hornby Skewes - Zonk Machine - middle transistor is silicon ??? trim pot
Replies: 34
Views: 22261

Re: Zonk Machine - middle transistor is silicon ??? trim pot

How do you know its a silicon transistor? Germaniums were available in plastic packages like this - I have some. What is the type number?
by tonyharker
08 May 2019, 15:15
Forum: Parts & Tools Sourcing & Trading
Topic: BC183L
Replies: 6
Views: 4425

Re: BC183L

Dont worry about it electrically they are the same - it usually means it is made by a different mfgr and some times the leads are a different orientation eg. instead of emitter base collector they are base collector emitter.
by tonyharker
08 May 2019, 14:22
Forum: Amplifiers
Topic: good tube amp without pre-amp
Replies: 15
Views: 8678

Re: good tube amp without pre-amp

Yeah spam