[TechAssist] Re: Dick Smith ESR meter battery life: false "low batt"?
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 14 Feb 2005 22:12:40 -0500
Note to whoever was inquiring about D S fly tester. I have used mine
for a couple of years now and it seems to do the job. Maybe not as fancy
as a sencore but not as expensive either.
Al G
Al's TV-Electronics
Pembroke Ont.
Canada
JSopko112@xxxxxxx wrote:
> Dear Friends... Don't reinvent the wheel... Bill Boyd submitted an easy to
> build "Battery Saver" circuit to "The Speaker" about a year ago... It
> consists of 4 parts & can be added to any battery powered meter... Read
> about it in
> the March 04 issue in the archives at
> http://www.iwaynet.net/~nesda/Mar04/Mar045.html (hopefully that link
> takes you to it - if not, do a cut &
> paste) This would Not be the answer for the Dick Smith, which is sensing low
> battery too soon. The answer for the Dick Smith is on Bob Parker's website
> and I
> saw the address for that in a previous post.
> joe sopko, consumer service, s.euclid,oh
> ----------------------------------------
> In a message dated 2/14/2005 10:01:32 AM Eastern Standard Time,
> gary@xxxxxxxxxxx writes:You could build a one-shot timer (say 5 minutes or
> so) so that when
> you push the power button, the power will stay on for that period of time
> only. I've been wanting to do that to my Capacitor Wizard because if the
> power switch is accidently left on, it goes through a set of batteries
> really fast.
> I was thinking of designing the circuit using a CMOS 7555 timer IC which
> can drive a small relay coil directly off it's pin 3 output. The power
> source to the cap meter can be fed through the relay contacts.
> Therefore, when you press the power-on switch the one-shot timer goes
> into effect and turns the relay on which supplies power to the cap meter
> until the timer period runs out and it automatically shuts the meter off.
>
> The only hitch I can see is, how much drain will the timer circuit cause
> on the battery in standby? Thats why I would use the CMOS timer instead
> of the regular 555, but it still may be a problem. Off to the drawing board.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
>
> John @ Myers TV wrote:
>
>>I kiled the first battery in about a week.
>>The power switch was triggering in my tool bag. I since pulled the button
>>out of the switch, and carry it seperately. Not perfect, but it works.
>>Anyone have a better idea?
>>
>>John Myers
>>Myers TV Service Company
>>376 E. State St.
>>Alliance, OH 44601
>>
>>phone: (voice & Fax) 330-821-6545
>>myers_tv_b@xxxxxxxxxxxxx
>>www.myerstv.net
>>----- Original Message -----
>>From: "STERLING PASHER" <spasher@xxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Saturday, February 12, 2005 1:38 PM
>>Subject: [TechAssist] Re: Dick Smith ESR meter battery life: false "low
>>batt"?
>>
>>
>>
>>
>>>Phil: have had mine for about 2 years and have only changed the battery
>>>twice and I use it all the time.. So you must have something wrong.
>>>
>>>Buck Pasher
>>>Buck's TV
>>>Gander Newfoundland
>>>Canada
>>>709-256-7738 (Fax & Phone)
>>>
>>>
>>>
>>>----- Original Message -----
>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Saturday, February 12, 2005 11:27 AM
>>>Subject: [TechAssist] Dick Smith ESR meter battery life: false "low batt"?
>>>
>>>
>>>
>>>
>>>>I love my Dick Smith, but one thing about battery life:
>>>>First, to "zero" the meter, you need to turn it on,short the leads
>>>>together, and push power button. If the battery is low, this is when the
>>>>meter shuts off instead of zeroing.But when I remove the old 9V battery
>>>>they always test good on my bat meter.I'm guessing the ckt that senses
>>>>the bat condition may be too sensitive. Anyone find this, and whats the
>>>>solution? I'm tired of changing 9V cells when they're only down a few
>>>>percent.
>>>>Phil Bader
>>>>
>>>>--
>>>>
>>>>Philip Bader
>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>Fax (863) 299-8821
>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>
>>>>
>
>
>
> You could build a one-shot timer (say 5 minutes or so) so that when you
> push the power button, the power will stay on for that period of time
> only. I've been wanting to do that to my Capacitor Wizard because if the
> power switch is accidently left on, it goes through a set of batteries
> really fast.
>
> I was thinking of designing the circuit using a CMOS 7555 timer IC which
> can drive a small relay coil directly off it's pin 3 output. The power
> source to the cap meter can be fed through the relay contacts.
> Therefore, when you press the power-on switch the one-shot timer goes
> into effect and turns the relay on which supplies power to the cap meter
> until the timer period runs out and it automatically shuts the meter off.
>
> The only hitch I can see is, how much drain will the timer circuit cause
> on the battery in standby? Thats why I would use the CMOS timer instead
> of the regular 555, but it still may be a problem. Off to the drawing board.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
>
> John @ Myers TV wrote:
>
>>I kiled the first battery in about a week.
>>The power switch was triggering in my tool bag. I since pulled the button
>>out of the switch, and carry it seperately. Not perfect, but it works.
>>Anyone have a better idea?
>>
>>John Myers
>>Myers TV Service Company
>>376 E. State St.
>>Alliance, OH 44601
>>
>>phone: (voice & Fax) 330-821-6545
>>myers_tv_b@xxxxxxxxxxxxx
>>www.myerstv.net
>>----- Original Message -----
>>From: "STERLING PASHER" <spasher@xxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Saturday, February 12, 2005 1:38 PM
>>Subject: [TechAssist] Re: Dick Smith ESR meter battery life: false "low
>>batt"?
>>
>>
>>
>>
>>>Phil: have had mine for about 2 years and have only changed the battery
>>>twice and I use it all the time.. So you must have something wrong.
>>>
>>>Buck Pasher
>>>Buck's TV
>>>Gander Newfoundland
>>>Canada
>>>709-256-7738 (Fax & Phone)
>>>
>>>
>>>
>>>----- Original Message -----
>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Saturday, February 12, 2005 11:27 AM
>>>Subject: [TechAssist] Dick Smith ESR meter battery life: false "low batt"?
>>>
>>>
>>>
>>>
>>>>I love my Dick Smith, but one thing about battery life:
>>>>First, to "zero" the meter, you need to turn it on,short the leads
>>>>together, and push power button. If the battery is low, this is when the
>>>>meter shuts off instead of zeroing.But when I remove the old 9V battery
>>>>they always test good on my bat meter.I'm guessing the ckt that senses
>>>>the bat condition may be too sensitive. Anyone find this, and whats the
>>>>solution? I'm tired of changing 9V cells when they're only down a few
>>>>percent.
>>>>Phil Bader
>>>>
>>>>--
>>>>
>>>>Philip Bader
>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>Fax (863) 299-8821
>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>
>>>>
>
>
>
> In a message dated 2/14/2005 10:01:32 AM Eastern Standard Time,
> gary@xxxxxxxxxxx writes:
>
>>You could build a one-shot timer (say 5 minutes or so) so that when you
>>push the power button, the power will stay on for that period of time
>>only. I've been wanting to do that to my Capacitor Wizard because if the
>>power switch is accidently left on, it goes through a set of batteries
>>really fast.
>>
>>I was thinking of designing the circuit using a CMOS 7555 timer IC which
>>can drive a small relay coil directly off it's pin 3 output. The power
>>source to the cap meter can be fed through the relay contacts.
>>Therefore, when you press the power-on switch the one-shot timer goes
>>into effect and turns the relay on which supplies power to the cap meter
>>until the timer period runs out and it automatically shuts the meter off.
>>
>>The only hitch I can see is, how much drain will the timer circuit cause
>>on the battery in standby? Thats why I would use the CMOS timer instead
>>of the regular 555, but it still may be a problem. Off to the drawing board.
>>
>>
>>
>>
>>Gary McCartney
>>
>>McCartney Electronics
>>Guelph Ontario Canada
>>Est. 1984
>>email: gary (at) number63.ca
>>
>>
>>
>>
>>
>>
>>
>>John @ Myers TV wrote:
>>
>>>I kiled the first battery in about a week.
>>>The power switch was triggering in my tool bag. I since pulled the button
>>>out of the switch, and carry it seperately. Not perfect, but it works.
>>>Anyone have a better idea?
>>>
>>>John Myers
>>>Myers TV Service Company
>>>376 E. State St.
>>>Alliance, OH 44601
>>>
>>>phone: (voice &Fax) 330-821-6545
>>>myers_tv_b@xxxxxxxxxxxxx
>>>www.myerstv.net
>>>----- Original Message -----
>>>From: "STERLING PASHER" <spasher@xxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Saturday, February 12, 2005 1:38 PM
>>>Subject: [TechAssist] Re: Dick Smith ESR meter battery life: false "low
>>>batt"?
>>>
>>>
>>>
>>>
>>>>Phil: have had mine for about 2 years and have only changed the battery
>>>>twice and I use it all the time.. So you must have something wrong.
>>>>
>>>>Buck Pasher
>>>>Buck's TV
>>>>Gander Newfoundland
>>>>Canada
>>>>709-256-7738 (Fax &Phone)
>>>>
>>>>
>>>>
>>>>----- Original Message -----
>>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>Sent: Saturday, February 12, 2005 11:27 AM
>>>>Subject: [TechAssist] Dick Smith ESR meter battery life: false "low batt"?
>>>>
>>>>
>>>>
>>>>
>>>>>I love my Dick Smith, but one thing about battery life:
>>>>>First, to "zero" the meter, you need to turn it on,short the leads
>>>>>together, and push power button. If the battery is low, this is when the
>>>>>meter shuts off instead of zeroing.But when I remove the old 9V battery
>>>>>they always test good on my bat meter.I'm guessing the ckt that senses
>>>>>the bat condition may be too sensitive. Anyone find this, and whats the
>>>>>solution? I'm tired of changing 9V cells when they're only down a few
>>>>>percent.
>>>>>Phil Bader
>>>>>
>>>>>--
>>>>>
>>>>>Philip Bader
>>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>>Fax (863) 299-8821
>>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>>
>>>>>
>>
>
>
>
>
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