Maybe this one (corrected version)
Honey Amp kits sold out
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Show posts MenuQuote from: saturated on February 02, 2025, 05:43:03 AMAt night in the small town it got quiet with the exception of an audible humTinnitus is not always a ringing and can be a hum. I have it at 104 Hz.![]()
Sometimes I would have the windows open I was in an upstairs room at the end of the house. This (real or perceived) hum/pitch/monotone frequency tormented me to some end. In fact I made a few nocturnal excursions around town looking for it. I would drive around to different areas and shut the engine (slant six 66 Dart) off and sit and try to determine where it was coming from.
Spoiler alert: I never did find it or find out anything.
Quote from: gerry113377 on January 30, 2025, 11:02:00 AMthe "pad" became separated from the "through hole". Did I say that right?'Through hole' in general refers to the older system with holes in the boards. The components are called 'through hole' type, which means they have the type of leads that go through the holes in the board.
Quote from: gerry113377 on January 27, 2025, 03:48:56 PMBoth sides of the board are different circuits, so when I soldered in the mosfets, the solder didn't make it to the othersideThe 2 sides of double-sided boards are connected by 'feed throughs' or 'vias' which are like tiny pipes at the through holes where the component legs go. They are not just connected by solder wicking through.
Quote from: argenta on January 14, 2025, 10:06:11 PMwhen testing for shorts between the transistors and the heat sink I observe the following:Those transistor collectors are connected to the supply rails. The heatsink is grounded to the chassis. When you measure, you are measuring from supply rail to ground.
The meter reads short circuit initially, then over a few seconds resistance increases to open. Why is that?
Quote from: saturated on January 05, 2025, 05:56:58 AMAlso it is toob rectified if it mattersYes it matters. With solid-state rectifier you do not want to hit the tube's plates with instant DC voltage before the heaters warm up, so standby is a way to deal with this.
Quote from: Paul Marossy on December 28, 2024, 07:18:26 PMSo despite the notion that any old FET should work, this circuit is very picky about what FET it will accept.Not sure where that was said. 'Any old' would still require it be n-channel jfet with same pinout.
Quote from: saturated on December 24, 2024, 02:00:42 PMAfter a little research maybe it's possibly a TDA2030 or LM1875 ?TDA2030 was what I was thinking as well. Here is their G10XL schematic which may be similar.