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Hi Folks!
Old dog, forgot many things about basics, so I need some help to calculate the Resistors. Don't want to burn them while making experiences.
The circuit sends +16 v= out when the LDR get light on it. There is a rotating disc whit holes and a "reading fork". Light comes from a "normal" white LED. The fork is homemade. The pulses goes to a "counter" into an other device. Common ground connection for the powers.
Function.
When light hits the LDR the T1 will open-lead, then the T2 will also open. R5 and R6 divide the voltage and let 16 V go out The R2 and R7 limits the current to the T1, T2 bases.
Hope, please someone calculate the resistors , give them right values.
Thank You!
Old dog, forgot many things about basics, so I need some help to calculate the Resistors. Don't want to burn them while making experiences.
The circuit sends +16 v= out when the LDR get light on it. There is a rotating disc whit holes and a "reading fork". Light comes from a "normal" white LED. The fork is homemade. The pulses goes to a "counter" into an other device. Common ground connection for the powers.
Function.
When light hits the LDR the T1 will open-lead, then the T2 will also open. R5 and R6 divide the voltage and let 16 V go out The R2 and R7 limits the current to the T1, T2 bases.
Hope, please someone calculate the resistors , give them right values.
Thank You!
