charter504
New Member
if anyone out there has the book electronics for the evil genius, please help.
Im stuck on lesson 16 and my capacitor must not be filling up because my light only comes on while it is connected and doesn't stay.
I have 9 volts coming through a signal diode that can only come in and not out, then it connects in parallel to a 10 M Ohm resistor that grounds, a 1 uF
capacitor that grounds, and to two inputs in a 4011 quad nand gate circuit.
The power is supposed to, in parallel, connect and give power to both inputs
to give a voltage high, and to fill up the capacitor. Then when the power is off, the capacitor is supposed to slowly drain through the resistor while still keeping power supplied to both inputs. The problem seems to be that my capacitor is not filling up, but i checked it and tried many other capacitors to
no avail.
Any ideas?
Im stuck on lesson 16 and my capacitor must not be filling up because my light only comes on while it is connected and doesn't stay.
I have 9 volts coming through a signal diode that can only come in and not out, then it connects in parallel to a 10 M Ohm resistor that grounds, a 1 uF
capacitor that grounds, and to two inputs in a 4011 quad nand gate circuit.
The power is supposed to, in parallel, connect and give power to both inputs
to give a voltage high, and to fill up the capacitor. Then when the power is off, the capacitor is supposed to slowly drain through the resistor while still keeping power supplied to both inputs. The problem seems to be that my capacitor is not filling up, but i checked it and tried many other capacitors to
no avail.
Any ideas?