Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Ignition Coil: Description and Operation
The Ignition Coil pack consisting of 2 coils, uses the principle of mutual induction to step up battery (low) voltage to ignition (high) voltage. The
Ignition Coil contains two windings of copper wire around a soft iron core. The primary winding is made of approximately hundred turns of a heavy gauge wire. It is connected to the battery through the
ignition switch. Current flows through it creating a magnetic field. When current flow in the primary winding is stopped (by the
power transistor breaking the circuit ground), the collapse of the magnetic field causes a voltage to be induced in the secondary windings. The ratio of turns in the primary windings to the number of turns in the secondary windings determines the voltage step up.