Electronic circuit : Simple but reliable car battery tester

Electronic circuit : Synchronized multi-spark module (SMSM) for Electronic Ignition Devices (EID)

Multi-spark ignition is very useful especially in the case of startings at low temperature and at low rpm range.

Electronic circuit : Nite Rider Lights

As a keen cyclist I am always looking for ways to be seen at night. I wanted something that was a novelty and would catch the motorists eye. So looking around at my fellow cyclists rear lights, I came up with the idea of 'NITE-RIDER'.

Electronic circuit : Automotive 12V to +-20V converter (for audio amplifier)

The limitation of car supply voltage (12V) forces to convert the voltages to higher in order to power audio amplifiers.

Electronic circuit : Universal Preamplifier

Electronic circuit : RIAA Corrector

To listen old vinyl LP's in a correct sounding on a sassy with dynamic cartridge you need a circuit, named RIAA corrector. This circuit you can find in old amps, but it isn't embedded in home cinema equipments or amplifiers can be obtained nowadays.

Electronic circuit : Stereo tape head preamplifier using LA3161

The Stereo Tape Head Preamplifier kit is based on LA3161 IC from SANYO.