We found this circuit in a Motorola manual. The circuit has the capacitor charging at 15 to 30 V, then discharging through the coil and generating a voltage that reaches 500 V for the spark plugs.
The sensor is an NTC and in the connection as shown in figure (a) we have the trigger with the...
This circuit has a thermal chamber that acts as a stabilizer, compensating for the ambient...
Found in Radio Electronics from the 90s, this circuit generates signals in the 60 Hz to 1.4 Hz...