<div class="section abstract"><div class="htmlview paragraph">THE TRANSISTOR SWITCHED ignition system may replace induction coil for applications where a premium can be paid for reliability. This paper describes the design features and advantages of this system, along with applications.</div><div class="htmlview paragraph">The new system can be used interchangeably with the present conventional induction coil. Using a slow coil (high-tension transformer) the system features: <ol class="list nostyle"> <li class="list-item"> <span class="li-label">1.</span> <div class="htmlview paragraph">Voltage output which is relatively flat throughout the engine speed range.</div></li> <li class="list-item"> <span class="li-label">2.</span> <div class="htmlview paragraph">Reduced contact current giving unlimited electrical life and reliability of contacts.</div></li> <li class="list-item"> <span class="li-label">3.</span> <div class="htmlview paragraph">Performance under fouling conditions at least equal to the present induction coil.</div></li> <li class="list-item"> <span class="li-label">4.</span> <div class="htmlview paragraph">Voltage ceiling flexibility — the voltage can be raised to provide for possible future engine designs.<span class="xref">*</span></div></li></ol></div></div>