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  1. M

    Camera/monitor adaptor

    Is it possible, using an adaptor, to connect the composite video signal from a camera to a VGA monitor?
  2. M

    External aerial for FM receiver

    As most commercial FM radio receivers are not fitted with an external aerial connection, does anyone know how to add one, for use in poor signal locations such as caravans.
  3. M

    Stepper motor driver

    I am trying to build  a simple circuit to operate a stepper motor at 48 steps per minute.  I am using a 555 to generate clock pulses at 1.25Hz followed by a 4070 and a 4027 to sequence the motor via 4 BFY51s.  But, the clock pulses are too low a level, so I have inserted a sub-min relay to...
  4. M

    SE Labs oscilloscope EM102 schematic

    I have this oscilloscope, dated 1965.  It works, sort of.  A schematic would be a big help for refurbishment purposes.
  5. M

    Switch-mode Nicad charger failure

    The 24volt battery discharger/charger for my Yamaha electric bike has stopped working.  No repair facility, but a new one costs
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