2 fixed schematic
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Yet another electronics newbie here :) I have tried to construct a simple 60Hz oscillator using a NE555 timer in astable mode, yet it does not seem to be oscillating. To test it, it has been connected to a speaker as I do not have access to an oscilloscope or any other fancy test equipment.

R1 and R2 are 10 and 47 ohms, and C is 220uF. According to my own calculations and to online calculators this should give a frequency of ~63Hz. I have tried the circuit using other resistor values - all of which work - but do not give the desired 60Hz.

schematicschematic

simulate this circuitsimulate this circuit – Schematic created using CircuitLab

Yet another electronics newbie here :) I have tried to construct a simple 60Hz oscillator using a NE555 timer in astable mode, yet it does not seem to be oscillating. To test it, it has been connected to a speaker as I do not have access to an oscilloscope or any other fancy test equipment.

R1 and R2 are 10 and 47 ohms, and C is 220uF. According to my own calculations and to online calculators this should give a frequency of ~63Hz. I have tried the circuit using other resistor values - all of which work - but do not give the desired 60Hz.

schematic

simulate this circuit – Schematic created using CircuitLab

Yet another electronics newbie here :) I have tried to construct a simple 60Hz oscillator using a NE555 timer in astable mode, yet it does not seem to be oscillating. To test it, it has been connected to a speaker as I do not have access to an oscilloscope or any other fancy test equipment.

R1 and R2 are 10 and 47 ohms, and C is 220uF. According to my own calculations and to online calculators this should give a frequency of ~63Hz. I have tried the circuit using other resistor values - all of which work - but do not give the desired 60Hz.

schematic

simulate this circuit – Schematic created using CircuitLab

1
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60hz Astable 555 timer circuit not oscillating

Yet another electronics newbie here :) I have tried to construct a simple 60Hz oscillator using a NE555 timer in astable mode, yet it does not seem to be oscillating. To test it, it has been connected to a speaker as I do not have access to an oscilloscope or any other fancy test equipment.

R1 and R2 are 10 and 47 ohms, and C is 220uF. According to my own calculations and to online calculators this should give a frequency of ~63Hz. I have tried the circuit using other resistor values - all of which work - but do not give the desired 60Hz.

schematic

simulate this circuit – Schematic created using CircuitLab