I have a simple analogue circuit I'm trying to create. Essentially it's a 1.2V power source that pulsates a vibrator motor - without a 555 timer.
When the circuit is closed, uninterrupted current is fed through the circuit but along one route I would like to pulsate current to a vibrator motor (at a rate of around once per second).
Intuitively, this seems possible through some sort of capacitor and maybe modulating the charge rate (pulse frequency) via a resistor in series, but I am unsure of the exact details.
I'm seeking help in identifying the types of components required to achieve this effect.
A component that can momentarily store and release energy, of which the frequency can be modulated?
Here's a simple diagram of the circuit in question.
The vibrator motor is rated at 1.3V, 70mA
I would like it to pulse once every 1 or 2 seconds (Exact number will depend on how much this effects the speed of the coil reaching desired temp).
The specifications of the heating element are unimportant at this point. In hindsight, that part of the circuit can be ignored.