I need some help with a simple charging circuit.
I attempting to use a many parts as I have on hand and there by keep the expense of this project to a minimum.
See the attached flow chart of what I am trying to accomplish.
The portion of the flow chart I need assistance with is the charger (Red)
Attached is a simple circuit diagram I think will work for the charger. I already have the transformer, two SCRs, maybe the capacitor, heat sink, and a case to mount it all in.
What do you all think?
My concerns and what I need help with are as follows:
1) I need an output voltage of at least 14.5 volts
a) I’m not sure how much will be lost over the SCRs
b) The actual output of the transformer is 16.4 VAC
c) Here are the specification on the SCR
USA 245040 R
245040 Specifications
Renard Manufacturing Co
Silicon Rectifiers SCR
Military/High-Rel : N
I(O) Max.(A) Output Current : 50
@Temp (?C) (Test Condition) : 150#
V(RRM)(V) Rep.Pk.Rev. Voltage : 400
I(FSM) Max.(A) Pk.Fwd.Sur.Cur. : 400
V(FM) Max.(V) Forward Voltage : 1.18
@I(FM) (A) (Test Condition) : 79
@Temp. (?C) (Test Condition) : 25
I(RM) Max.(A) Reverse Current : 1.0m
@V(R) (V)(Test Condition) : 400
I(RM) Max.(A) Pk. Rev. Current :
@Temp. (?C) (Test Condition) :
Maximum Operating Temp (?C) : 175
Description : Cathode to case
2) I am assuming the capacitor serves a smoothing function but I have no idea what its value should be.
a) I salvaged a 10 mfd 660 VAC out of a 12 volt converter will it work?
Any assistance and or suggestion you all might have will be greatly appreciated.
Thanks!
I attempting to use a many parts as I have on hand and there by keep the expense of this project to a minimum.
See the attached flow chart of what I am trying to accomplish.
The portion of the flow chart I need assistance with is the charger (Red)
Attached is a simple circuit diagram I think will work for the charger. I already have the transformer, two SCRs, maybe the capacitor, heat sink, and a case to mount it all in.
What do you all think?
My concerns and what I need help with are as follows:
1) I need an output voltage of at least 14.5 volts
a) I’m not sure how much will be lost over the SCRs
b) The actual output of the transformer is 16.4 VAC
c) Here are the specification on the SCR
USA 245040 R
245040 Specifications
Renard Manufacturing Co
Silicon Rectifiers SCR
Military/High-Rel : N
I(O) Max.(A) Output Current : 50
@Temp (?C) (Test Condition) : 150#
V(RRM)(V) Rep.Pk.Rev. Voltage : 400
I(FSM) Max.(A) Pk.Fwd.Sur.Cur. : 400
V(FM) Max.(V) Forward Voltage : 1.18
@I(FM) (A) (Test Condition) : 79
@Temp. (?C) (Test Condition) : 25
I(RM) Max.(A) Reverse Current : 1.0m
@V(R) (V)(Test Condition) : 400
I(RM) Max.(A) Pk. Rev. Current :
@Temp. (?C) (Test Condition) :
Maximum Operating Temp (?C) : 175
Description : Cathode to case
2) I am assuming the capacitor serves a smoothing function but I have no idea what its value should be.
a) I salvaged a 10 mfd 660 VAC out of a 12 volt converter will it work?
Any assistance and or suggestion you all might have will be greatly appreciated.
Thanks!