Ignition coil tester for testing a vehicle engine ignition coil

An ignition coil tester for testing a vehicle engine ignition coil, the ignition coil being associated with an ignition module, from which an input signal is received in a pulsed square wave form, each of the ignition module and the ignition coil being powered by a direct current battery, said ignition coil tester comprising:

• an oscillator including an electrical terminal for electrical connection thereof to the ignition coil for producing an ignition coil input signal emulating the input signal from the ignition module;
• short circuit detector circuitry in electrical communication with said oscillator for detecting a short circuit within the ignition coil;
• an open coil detector in electrical communication with each of said oscillator and said short circuit detector circuitry for detecting an open circuit within the ignition coil;
• a power supply for supplying power to said oscillator and the ignition coil;
• a first visual indicator in electrical communication with each of said oscillator and said short circuit detector circuitry for indicating a non-defective ignition coil, said first visual indicator being illuminated when an open circuit is not detected by said open coil detector;
• a second visual indicator in electrical communication with each of said oscillator and said short circuit detector circuitry for indicating a defective ignition coil, said second visual indicator being illuminated when a short circuit is detected by said short circuit detector circuitry;
• a plurality of signal strength indicators including an electrical terminal for electrical connection thereof to the ignition coil for visually displaying a representation of the strength of a signal output from the ignition coil, said plurality of signal strength indicators being in series one with another and separated by current dividers, said strength of said signal output from the ignition coil being determined by a number of said plurality of visual indicators being illuminated;
• and
• a test switch for initiating a test of the ignition coil.

An ignition coil tester for testing a vehicle engine ignition coil, the ignition coil being associated with an ignition module, from which an input signal is received in a pulsed square wave form, each of the ignition module and the ignition coil being powered by a direct current battery, said ignition coil tester comprising:

• an oscillator including an electrical terminal for electrical connection thereof to the ignition coil for producing an ignition coil input signal emulating the input signal from the ignition module;
• short circuit detector circuitry in electrical communication with said oscillator for detecting a short circuit within the ignition coil;
• an open coil detector in electrical communication with each of said oscillator and said circuit detector circuitry for detecting an open circuit within the ignition coil;
• a power supply for supplying power to said oscillator and the ignition coil;
• a first visual indicator in electrical communication with each of said oscillator and said short circuit detector circuitry for indicating a non-defective ignition coil, said first visual indicator being illuminated when an open circuit is not detected by said open coil detector;
• a second visual indicator in electrical communication with each of said oscillator and said short circuit detector circuitry for indicating a defective ignition coil, said second visual indicator being illuminated when a short circuit is detected by said short circuit detector circuitry;
• and
• at least one signal strength indicator including an electrical terminal for electrical connection thereof to the ignition coil for visually displaying a representation of the strength of a signal output from the ignition coil, said at least one signal strength indicator includes a plurality of visual indicators in series one with another and separated by current dividers, said strength of said signal output from the ignition coil being determined by a number of said plurality of visual indicators being illuminated.