actuate	a relay
adjust	a control
amplify	a signal
boost	a signal
charge	frequency a capacitor
complate	a circuit
Detect	a signal
Discharge	a capacitor
Energize	a relay
Generate	a current a signal a frequency a voltage
induce	a voltage
modulate	a signal / a frequency
Produce	a siganl a voltage on output
step down/up	a voltage