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.
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...
This circuit can be controlled by an LDR causing an LED to flash at a frequency given by C2. The...
We found this circuit in the Philips Databook of 1990. The circuit is indicated for low-cost...