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Post by cedarchoper58 on Dec 6, 2023 13:45:30 GMT -5
i tried a new alkaline battery that measured 9.6 vdc and a new carbon comp battery that also measured 9.6 vdc in my tube screamer and the alkaline sounded like my carbon comp does when its at 8.5vdc and the red light on my tube screamer was quite a bit dimmer than whith the carbone comp. Any ideas why? thks
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Post by reverendrob on Dec 6, 2023 14:03:06 GMT -5
Past the fact that I'm rather incredulous at hearing a difference, the fact is that the "measured" reading of the battery is NOT under load.
A battery may read X with no load, but have substantially less under load.
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Post by LTB on Dec 6, 2023 16:54:50 GMT -5
Lithium Batteries hold their voltage until depleted. They do last the longest but the issue I have with them is there is NO WARNING when they suddenly do not work.
NIMHD (Nickel Metal Hydride) last longer than Alkaline. They do decrease in voltage over time as do Alkaline but at a slower rate.
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chucksmi
Wholenote
Posts: 173
Formerly Known As: Offshore Angler elsewhere
Age: I saw Jerry Live
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Post by chucksmi on Dec 21, 2023 6:35:20 GMT -5
That makes sense, While different batteries offer different construction can all have the same capacity in mAh, their ability to supply current varies greatly based upon chemistry and construction. I'm actually surprised that here are people out there still using batteries in their pedals. With the advent of modern, filtered power supplies I don't see why it's necessary.
I mean, just keeping the batteries in the mics maintained is enough of a pain, no way I'm going to add my effects to that workload. ANyone else remember how in the old days we'd have to keep bending over onstage to tweak the pedals as the batteries wore out? I do not miss those days.
Chuck
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DrKev
Wholenote
It's just a guitar, it's not rocket science.
Posts: 418
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Post by DrKev on Dec 21, 2023 7:39:38 GMT -5
Lithium Batteries hold their voltage until depleted. They do last the longest but the issue I have with them is there is NO WARNING when they suddenly do not work. NIMHD (Nickel Metal Hydride) last longer than Alkaline. They do decrease in voltage over time as do Alkaline but at a slower rate. NiMH drop voltage from 100% full voltage to about 80% as the stored charge depletes from 100% to 10%, then they very quickly die. |
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Post by Mike the marksman on Dec 21, 2023 8:21:08 GMT -5
I tried a 9V power supply with my Hartman silicon fuzz and it sounded terrible. Put a 9V battery back in and it sounded fine again. I'll only use batteries in a fuzz.
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pdf64
Wholenote
Posts: 556
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Post by pdf64 on Dec 21, 2023 12:40:43 GMT -5
That makes sense, While different batteries offer different construction can all have the same capacity in mAh, their ability to supply current varies greatly based upon chemistry and construction. I'm actually surprised that here are people out there still using batteries in their pedals. With the advent of modern, filtered power supplies I don't see why it's necessary. I mean, just keeping the batteries in the mics maintained is enough of a pain, no way I'm going to add my effects to that workload. ANyone else remember how in the old days we'd have to keep bending over onstage to tweak the pedals as the batteries wore out? I do not miss those days. Chuck I hate more wires under my feet than necessary. With simple, 1 to 3 transistor pedals (boost / fuzz / wah), batteries have always lasted months. With the advent of rechargeable lithium batteries, even those in high consumption digital pedals can last months too. I guess it depends on the population of the pedalboard, even I’d probably relent if mine ever got anywhere near double figures. |
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pdf64
Wholenote
Posts: 556
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Post by pdf64 on Dec 21, 2023 12:46:50 GMT -5
i tried a new alkaline battery that measured 9.6 vdc and a new carbon comp battery that also measured 9.6 vdc in my tube screamer and the alkaline sounded like my carbon comp does when its at 8.5vdc and the red light on my tube screamer was quite a bit dimmer than whith the carbone comp. Any ideas why? thks Recheck battery voltages with them in the pedal, with a plug in the input, so that the circuit can draw current and the meter read the actual voltage the circuit is getting. As previously mentioned, my vintage TS9 needed its power supply bypass ecaps replacing. They don’t last forever. The (main) power supply decoupling cap helps to avoid battery condition affecting circuit performance. |
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Post by rdr on Dec 22, 2023 10:15:56 GMT -5
I built a small board (pedal train) and put 8 pedals on it. I power them with a Joyo 4400mah battery pack on the underside (put short wooden legs to provide clearance). It sounds great with digital or analog pedals. It has lasted 4 hours for me so far. Has an output with 9,12,18 volts and a 5v USB out. No more individual 9v for me!
I recommend this unit.
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Post by Leftee on Dec 22, 2023 10:36:10 GMT -5
I love the idea of battery packs. One less power cord to worry about and no rectification. Clean power!
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Post by cedarchoper58 on Dec 22, 2023 17:03:28 GMT -5
i tried a new alkaline battery that measured 9.6 vdc and a new carbon comp battery that also measured 9.6 vdc in my tube screamer and the alkaline sounded like my carbon comp does when its at 8.5vdc and the red light on my tube screamer was quite a bit dimmer than whith the carbone comp. Any ideas why? thks Recheck battery voltages with them in the pedal, with a plug in the input, so that the circuit can draw current and the meter read the actual voltage the circuit is getting. As previously mentioned, my vintage TS9 needed its power supply bypass ecaps replacing. They don’t last forever. The (main) power supply decoupling cap helps to avoid battery condition affecting circuit performance. i checked the voltage with the cable pluged in to the pedal and with it on and there was almost no drop on either alcaline or carbon comp both started around 9.5v and droped to around 9.2v |
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