Super starter for cars

The super starter makes it possible to start cars with ageing batteries and obsolescent (coil-based) Ignition systems, particularly during cold or damp weather. During starting, the voltage of an ageing (and possibly cold) battery will be insufficient for the coil to generate a tension high enough to create a strong spark across the spark plugs. The circuit[…]

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Low power NBFM transmitter

The transmitter is a crystal-con-12 trolled, battery-powered, one-chip narrowband frequency modulation v(NBFM) model for operation in the 27- m band, primarily as a wireless microphone*. The circuit is an application of Motorola’s MC2833 single-chip VHF narrowband FM transmitter IC, designed to work in the 27-MHz band. The transmitter output power is about 10 mW (+10[…]

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