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  1. spike1947

    Ryobi 4v cordless drill

    Hi Sorry not been into electronics for quite awhile so a bit slow !. Have a Ryobi 4v cordless drill, problem not charging, voltage at input 6.2v!, what do I have to check in between ?. have done a schematic, but not sure, if it is the correct way !. Have done a schematic ! cheers Spike
  2. spike1947

    Testing LED's

    Hi I am trying to replace some dead LED's on a couple of strips from a LED TV, tested a row of 4 using 12.2 v dc and it shows 2 working, now I am trying test a single LED using 3.23 v dc ( 2xAAA Bats ) , but even the good ones are not lighting with that voltage, what am I doing wrong here ...
  3. spike1947

    Akura Retro Phono n BT Player AITVS550 BTRB

    Hi have been given a couple of Akura Retro Phono n BT Players and of course they don't work, where do I start to test voltages etc on it, getting 5vdc out of transformer and to the board, the battery is giving out 3.7vdc , don't realy know where to test for any voltages , tried to find a...
  4. spike1947

    Paper Shredder ir paper detector

    Hi I have a Paper Shredder that ir sensor is not working, changed Caps still no luck, so have given up on that part, the Shredder itself has hardly had much use, the motor works fine ( in reverse ) . What I am wanting to do is make a small ir proximity paper detector to operate the 24v relay...
  5. spike1947

    Paper Shredder Fault

    Hi When I switch on the Shredder and put paper in nothing happens , if I leave the paper in the shredder after a couple of seconds I can hear a buzzing sound coming from the relay then shortly after that it starts to run ok . Just a bit more info, measured the voltage to the Relay Coil, at...
  6. spike1947

    Capacitor id

    Hi Can anyone id this Cap for me . Cheers Spike
  7. spike1947

    Testing a Polyester Cap

    Hi Can you tell me how to test a 33nf - 300v Polyester capacitor, it seems that I can't test it with a Digital Multimeter ! . cheers Spike
  8. spike1947

    Airwick Freshmatic Max unit

    Hi I have a couple of Airwick Freshmatic Max Auto room spraying units , the have 3 settings on them I=9 minutes , II=18 Min and III=32 min . I would like to change the time settings to spray every 60 Mins or there about's etc . Is there anything I can make up to do that , or is there any module...
  9. spike1947

    Fire Fly drawing

    Hi I am attaching a drawing for a flickering LED solar charged , I am wanting to change the supply voltage to 2.4v ( from 2 x 1.2v Ni-MH ) and using 2 x solar panels from the pound shop ( giving out 5.6v ! ) , driving a flickering LED 1.8v to 2.2v . What would I have to change to obtain my...
  10. spike1947

    Info for 2N3904 and 2N3906

    Hi As I am a beginner into Electronics I am always asking questions that may seem obvious to other members on here so I am apologising in advance . I have a attached a schematic , can someone explain to me the difference to a 2N3904 and a 2N3906 apart from the different electron flow( ie...
  11. spike1947

    Voltage regulator Comparison

    Hi I am trying to find a equivalent to this regulator MCP1700-2102E/TO from Microchip technology , I need 2.1 Volts input . There seems to be plenty of 1.8 v and 3.3v around . spike
  12. spike1947

    Trickle Charge Batteries

    Hi I am wanting to know how I can rig up a simple trickle charge for 4 x AAA Ni-MH Rechargeable Batteries .I need them to run a 5 volt laser for a security set up I am making . cheers spike
  13. spike1947

    Firefly Jar

    Hi I am wanting to a make a Firefly Jar , I just wanted to know if anyone on here can help me with making it and sourcing the items info as follows . This is the info from the web site , I will attach a drawing ! : DESCRIPTION: I'm calling it the Firefly Jar since it looks like a jar of...
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